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FERMENTED MILK PRODUCTS**

BUTTER

The fat content of butter is generally about 80%. The non-fat components of butter consist of moisture, milk solids not fat and salt if added. Most of the butter produced in our country is converted to ghee.

Butter is made from sweet or sour cream. The cream is pasteurized at 62.8°C for 30 minutes after which it is immediately cooled. Then a culture of desirable micro-organisms is added. The culture consists of bacteria of two types one of which ferments lactose producing lactic acid which in turn curdles the milk and the other principally attacks the citric acid of milk producing volatile acids and products such as diacetyl which give the desirable flavour and aroma to the butter. The cream is then allowed to ripen at 21.1 °C for several hours for the fermentation to take place.


CHEESE

Cheese is made of casein:

Classification of cheese

Cheese is classified as hard or soft, depending on their moisture content and whether they are ripened by bacteria or moulds or unripened.

CHEESE PREPARATION

  1. Curd formation: Pasteurized whole milk is brought to a temperature of 31°C and lactic acid producing starter culture and required colouring matter are added. After about 30 minutes to the mildly acidic milk,' rennin solution is added, stirred and allowed to set the set the curd for 30 minutes.
  2. Curd cutting: The curd is cut into small cubes. The removal of whey from small cubes is easy. The curd for different types of cheese therefore is cut into different sized cubes.
  3. Curd cooking: Then it is heated to 38°C and held at that temperature for about 45 minutes. During this period the curd is stirred to prevent matting.
  4. Curd drainage: Heating squeezes out whey from the cubes. Heat increases the rate of acid production which makes the curd cubes shrink. Whey is drained off and the curd is allowed to mat.
  1. Cheddaring: Next it is subjected to the process of cheddaring. This consists cutting the matted curd into blocks turning the block at 15 minutes intervals and then piling the blocks on one another 2 or 3 deep. During the cheddaring operation which takes about 2 hours acid formation continues. The cheddared curd is passed through a curd mill which cuts the slabs into strips.
  2. Salting the curd: Whey is eliminated during this process. Salt is added to draw whey out of curd by osmosis and also acts as a preservative. Salt also holds down spoilage of organisms and adds flavour.
  3. Pressing: The cheese cubes are pressed under pressure overnight. This pressing determines the final moisture content of finished product and then the cheese is ripened from 60 days to 12 months depending on the strong or mild flavour cheese required.
  4. Ripening: Ripening takes place under controlled conditions of temperature and humidity for varying periods of time. During this process cheese changes from a bland tough rubbery mass to a full flavoured soft product. During ripening rennin splits the protein of cheese into nitrogenous products of intermediate size such as peptones and peptides. Enzymes formed by the micro-organisms act on these and other substances to form products like amino acids, amines, fatty acids, esters, aldehydes, alcohols and ketones that give its characteristic flavour. Ripening also improves the cooking quality. The increased dispersability of the protein of ripened cheese is a factor in the ease of blending cheese with other food ingredients.

Cheese has limited keeping quality and require refrigeration, should be kept cold and dry i.e., it should be wrapped in wax paper or metal foil.

Image:Swiss cheese cubes.jpg

SHRIKHAND: - Shrikhand is a semi-soft sweetish sour, whole milk product prepared form lactic fermented curd. The basic ingredient of Shrikhand is Chakka.

Method of preparation: - The standardized method of preparation consist of fresh, sweet buffalo milk, which has been standardized to 6% fat, is pasteurized at 71 for 10 minutes and then cooled to 28-30. It is then inoculated @ 1% with lactic culture which is mixed well, and incubated at 28-30 for 15-16 hours. When the curd has set firmly (acidity 0.7-0.8% lactic), it is broken and placed in a muslin cloth bag and removed after 8 to 10 hours. Now the curd get change into a solid mass called Chakka. This Chakka is then mixed with grinded sugar. Colour and flavour can also be added to obtain the product known as Shrikhand.


GHEE: - Ghee is a clarified butter fat prepared from cow or buffalo milk.

Method of preparation: - Cream accumulated after few days is usually taken in a suitable vessel and heated and stirred on a low flame to remove the moisture contain. After removing moisture contain further heating is stopped then cooling is done. On cooling, when the residue has settled down the clear fat is decanted into suitable containers.

Characteristics

Cow

Buffalo

Milk fat

99 to 99.5%

Moisture

Not more than 0.5%

Unsaponifiable matter

 

Carotene (mg./g.)

3.2-7.4

-

Vit. A (I.U./g.)

19-34

17-38

Charred casein, salts of copper
and iron, etc.

Max.2.8 (Agmark) Traces


RABRI

It is prepared concentrated and sweetened product comprising of several layers of clotted cream. The layer of cream formed, as a skin is continuously removed. When the milk is reduced to 1/3 of the original volume, sugar is added and the layer of cream skin is mixed.

Composition

Characteristics

Percentage

Moisture

30

Fat

20

Protein

10

Lactose

17

Ash

3

Sugar

20

 

 

Method of preparation: - Rabri is normally prepared by heating 3-4kg of milk in a wide pan over a fire to simmering temperature (85-90), and then maintaining the temperature by controlled heating. The milk is neither stirred nor allowed to boil. The surface of the milk may be gently fanned to help the process of skin formation. A piece of this skin, about 3-4cm. square, is continuously broken with a thick wooden stick and moved to the cooler parts of the pan. This operation requires considerable skill and constant attention. Simultaneously, as slow evaporation reduces the milk to about one-fifth of its original volume, good quality round sugar at 5-6 per cent by weight of the original milk is added to the milk concentrate and dissolved in it. The layers of skin collected on the pan surface are then immersed in the mixture and the finished product obtained by gently heating the whole mass for another brief period.

 


KHOA

Khoa is a partially dehydrated whole milk product.

Method of preparation: -Milk is cautiously stirred in a circular motion to prevent scorching. When milk becomes viscous the rate of stirring is increased to maintain a uniform consistency. The pan is removed from the fire and the product is worked up with the flattened end of the scraper by alternatively spreading into thin layers and collecting repeatedly until it retains its shape. After cooling it becomes solid.


Composition

Characteristics

Cow

Buffalo

Moisture

25.6

19.2

Fat

25.7

37.1

Protein

19.2

17.8

Lactose

25.5

22.1

Ash

3.8

3.6

Iron (ppm)

103

101

Paneer

KALAKAND

Ingredients

Milk                

1 kg

Sugar              

60g

Citric acid       

1/2g

Pista (optional)            

a few pieces

Silver paper (optional)

1 leaf

Cardamom      

A few sticks

Method

Boil the specific quantity of milk in a pan placed over a brisk and non-smoky fire. Stir continuously with a laddle with a circular motion. After 10-15 minutes, add to it the required amount of citric acid as a dilute solution in water. These will partially coagulate the milk. At this time vigorous stirring is required to obtain a product of good quality. When a semi-solid stage is reached, add sugar and stir well. Add crushed cardamom if desired. Remove after five minutes. This finished product is set in a greasy tray or plate and allowed to cool at room temperature. Kalakand is now ready. Decorate, if desired, with silver paper and sliced pista. Cut into required size and shape to serve.


GULAB JAMUN**

PREPARATION OF GULAB JAMUN FROM KHOA

Ingredients  

Khoa (g)

75

Maida (g)

25

NaHCO3 (g)

0.1

Water (ml)

15

Sugar syrup:

Water (ml)

300

Sugar (g)

300

Frying oil (ml)

100


BURFI*


Ingredients 

Khoa (fresh and hot)

250g

Sugar (crystal)

75g

Chocolate       

10g


Method

Break khoa into bits and spread it in a pan. Add (preferably crystal) sugar to it and mix well by working vigorously with a wooden ladle. Collect the mixture into a compact mass when all the sugar has dissolved. This is Plain burfi. Now separate one third of the mixture and mix chocolate into it. Take a well-greased plate and spread plain burfi (two-thirds of the mixture) as a thick layer. Apply the chocolate-mixed portion all over it as a thin
[pista+burfi+1.JPG]

KHEER**

Kheer is also known as Basundi. It is used for direct consumption as desert. It is prepared by concentrating milk to half of its original volume by open pan concentration and adding sugar and other condiments.

Method: - fresh, sweet, cleaned milk standardized to 4.0% fat and vigorously boiled in a jacketed stainless steel pan for 3 to 5 minutes accompanied by constant stirring cum scraping with a laddle. High-grade rice 2.5%of milk, pre-cleaned and washed with cold water before use, is now added. The mixture is gently boiled, with periodical stirring-cum-scraping. When the concentration is about 1:8:1, clean, good quality sugar is added at 5% of milk. Gentle heating is continued for another 3 to 5 minutes till a final concentration of about 2:1 is obtained. The yield of finished kheer should be about 50% of the milk used.

Badam Kheer - Almond Sweet Drink

PANEER **

Paneer refers to the indigenous variety of rennet-coagulated, small-sized, soft cheese.

Composition

Characteristics

Cow (%)

Buffalo (%)

Moisture

71.2

71.1

Fat

13.5

13.1

Total solids

28.8

28.9


Method of preparation: - Surati Cheese or paneer is the best known of the few indigenous varieties of cheese. The name Surati appears to have been derived from the town of Surat.

Technique of production: - Fresh buffalo milk, standardized to 6 per cent fat, is pasteurized by heating it to 78for 20 seconds and promptly cooling it to 35 . About 0.5 to 2 kg of this milk is placed in the coagulating pan and the temperature maintained at 35 by circulating warm water in the jacket. Good quality lactic starter @ 0.5 per cent of milk is now added to the milk and thoroughly mixed into it. This is followed by the addition of rennet @6-7ml/100 lit. milk, the rennet being previously diluted with about 20 times its volume of water (The quantity of rennet added should be such as to give a clean cut in the curd at the end of about 60 minutes.) after mixing it adequately, the renneted milk is allowed to set till a firm coagulum fit for basketing is obtained. The temperature during this time is maintained at 35. The curd is then ladled out with a vertical slant in thin slices, and filled into especially made bamboo/wicker baskets. These baskets are previously prepared by cleaning them with heated water, keeping them soaked in a 10% lukewarm salt solution for about 10 minutes, and then tkm hinly dressed with salt. Each successive layer of curd put into the baskets is uniformly sprinkled with salt. Salting is done @ 4-5% of the green cheese (which works out to approximately 2% of the milk taken). After they have been filled, the baskets are placed on the draining rack to allow for drainage of whey, which is collected in a tray placed underneath. Generally, at the end of 50 to 60 minutes, the individual pieces of cheese are firm enough to be handled without breaking. At this stage, they are carefully turned upside down in their respective baskets. This is known as the ‘First Turning’. After draining them for a further 30-40 minutes, the cheeses, on attaining the desired firmness and consistency, are subjected to their ‘Second Turning’. The collected whey is then strained through a muslin cloth and kept in the cheese-soaking basin. The pieces of cheese are removed from the baskets and carefully submerged in the whey. They are then left steeped in whey for 12-36 hours till disposed of or used. The yield of surati paneer is approximately 28.5% for cow and 34.0% for buffalo milk.

Paneer

CHHANA **

Chhana, also called paneer in certain parts of the country, constitutes one of the two chief bases (the other being khoa) for the preparation of indigenous sweetmeats. Chhana refers to the milk-solids obtained by the acid coagulation of boiled hot whole milk and subsequent drainage of whey. The acids commonly used are lactic or citric, in both natural and chemical forms. It should not contain more than 70% moisture, and the milk fat content should not be less than 50.0 per cent of the dry matter.

Composition

Characteristics

Cow (%)

Buffalo (%)

Moisture

53.4

51.6

Fat

24.8

29.6

Protein

17.4

14.4

Lactose

2.1

2.3

Ash

2.1

2.0

Method of production: - There are two methods for making chhana, which are adopted by commercial manufacturers.

Batch method: Usually all the milk for chhana-making is brought to boil by heating it directly in a large iron pan over an open fire, all the while stirring it with a laddle, and later keeping it simmering hot in the pan. This hot milk is ladled out in batches of 0.5 to 1kg into a separate coagulation vessel, either already containing, or to which is promptly added the required quantity of the coagulant. The latter is normally cleansed sour chhana-whey, which is maintained in a large earthen vessel from day to day. The mixture of milk and whey is stirred with the ladle, and when it has completely coagulated, the contents are poured over a piece of clean muslin cloth stretched over another vessel (for receiving the whey). The process is repeated till all the milk is used up. The cloth containing the coagulated solids is then removed, tied up into a bundle without applying pressure and hung up not only to drain out the whey completely but also to cool the chhana-pot.

Bulk method: All the milk (5-15kg) is brought to boil as above in the pan, which is then removed from the fire. The coagulant is then added slowly and gradually in the required quantity to the entire lot of milk and stirred with the ladle so that it mixes properly and clear coagulation takes place. The chhana is collected by straining it through a cloth.

 

SANDESH

Ingredients

Chhana           

250g

Sugar              

75g

Flavour (optional)

A few drops

Cardamom (optional)  

A few sticks


Method

Break freshly made chhana into bits. Mix (preferably ground) sugar into it. Put the mixture in a pan and heat on a slow fire stirring all the time with a laddle. (Add crushed cardamom, if desired, towards the end). When the mixture is ready (mixture forms balls when tested) pour it into a tray and leave it to cool and set. Sandesh is now ready. It is cut or moulded into the desired size and shape. (A popular flavour-cum-colour is saffron, which is mixed with the finished product before it is cut or moulded).


RASSOGOLLA**

Ingredients

Chhana (soft)  

200g

Maida (optional)

8g

Sugar              

250g

Water              

1 kg

Elaichidana     

A few pieces

Flavour (Rose)

A few drops


Method

Break the above quantity above quantity of chhana into bits and start kneading. There should be no oozing of fat during this operation. To avoid this, especially during summer, keep the vessel in which the kneading is done, upon a tray in which ice or chilled water is kept. If required, a small quantity (as above) of maida may be added to avoid cracks in the finished rassogollas. The consistency of the kneaded mass should be such that when made into small balls, it has a smooth surface without signs of cracks. Meanwhile, dissolve all the sugar in water and boil the solution. During this process, add 2 tablespoonfuls of milk and ladle out the scum to obtain clear syrup. Keep this in a suitable-sized degchi in which the chhana balls are cooked, such that a minimum depth of 10-15cm. of syrup is obtained.

Now make the balls of chhana. While doing this, one sugarcoated Elaichidana may be put in the centre of each ball. After all the balls (10-15) have been made, put them gently in the boiling sugar syrup for the cooking process. See that the balls do not overcrowded the degchi and that there is enough space for them to move freely, especially after they swell. Close the lid of the vessel. The heating should be so controlled that the balls are constantly covered with foam. Keep a watch form time to time. After 5-10 minutes, the balls will swell. If the chhana has been well made and properly kneaded, the balls will not crack or break. After 5-10 minutes, the colour of the balls will darken slightly. The finished rassogollas should normally be ready after 20-25 minutes. During the last stage, the lid should be removed so that the sugar syrup finally attains string consistency. After cooling, sprinkle flavour (rose) to serve.


KULFI **

Ice cream frozen in small containers. While the milk is boiling, it is sweetened by an addition of sugar and the product is concentrated to approximately 2:1. To this concentrate, when it has cooled, are added malai (indigenous cream), crushed nuts and a flavour (commonly rose or vanilla). The mix is placed in triangular, conical or cylindrical moulds of various capacities made of galvanized iron sheets. The moulds are closed on top by placing a small disc over them. A mixture of ice and salt in the ratio of 1:1.

Technologies Available

*    - Post Harvest Technology Centre, TNAU, Coimbatore.
**  - Home Science College and Research Institute, TNAU, Madurai.

Source

http://www.recipetips.com/images/glossary/m/milk_skim.jpg
http://farm3.static.flickr.com/2191/2429466610_0c7d34b9a6.jpg
http://static.flickr.com/119/316311987_a9dc60c4c5.jpg
http://www.agroexporters.com/full-images/685216.jpg
http://farm1.static.flickr.com/42/105300416_a9af7530ae.jpg
http://andrew.jorgensenfamily.us/files/2007/09/peaches-and-cream.jpg
http://www.restaurantwidow.com/images/2008/05/05/coffee_ice_cream.jpg
amitonnews.blogspot.com/2007/04/yoghurt.html 
http://lightbluetaxi.com/wp-content/uploads/2008/01/butter.png
enjoyindianfood.blogspot.com/2008/05/top-10-p...shrikhand
www.jupiterimages.com/itemDetail.aspx?itemID=... 
www.tarladalal.com/recipe.asp?id=424
http://food.sulekha.com/dishimages/433.jpg
http://bp1.blogger.com/_UTFhjZBO5ac/s1600-h/pista+burfi+1.JPG
www.sailusfood.com/.../ 
http://www.giftssendtokolkata.com/nag/sandesh_kasturi.jpg
http://content.answers.com /thumb/4/4d/250px-Rasagulla.jpg
http://media.santabanta.com/rec/pistachio_saffron_kulfi.jpg
http://govindmilk.com/products.php?id=paneer
http://www.liliesnroses.com/Sweets_files/kalakand-recipe.jpg


 

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