Answer
Ingredients for Yeast
1) Maida (All Purpose Flour) - 1 cup
2) Curd - 2 table spoon
3) Sugar - 2 tea spoon
4) Sounf Powder - 1 tea spoon
Method - How to make Yeast at home
Sieve the maida, and mix it well with curd, sugar, and sounf powder and make a batter by pouring less than 1/2 cup of luke warm water. Beat it for atleast 5-6 minutes so that no lumps are formed. Put this batter in an air-tight container or cover the bowl in which you prepared the batter with a cleanse film. Within 18-24 hours the batter produces bubbles, which means that the yeast is formed. You can preserve it for 7 days in the refrigerators.