Eggless VAnilla Sponge cake with curd

INGREDIENTS

• Dry 
• 1 cups of all-purpose flour / maida
• ½ tsp of baking soda
• 1  tsp of baking powder
• 
  
• Wet 
• 
  
• 1/2 cup of plain thick curd  (not sour, at room temperature)
• 1  cup of powder sugar
• 1/4 cup of  butter 
• 1 tsp of vanilla extract / essence
• 1/2 tsp vinegar / lemon juice

INSTRUCTIONS

1. Preheat oven to 350F / 180C. Grease an 8" cake pan (or loaf pan) with some butter or oil and set aside.
2. Beat the yogurt well removing any lumps and add the sugar to it.
3. Sieve the flour , baking powder and Baking Soda. 
4. Beat the butter and sugar untill it looks smooth and fluffy.
5. Add in Vanilla essence. 
6. Add dry ingredients along with curd and mix without any lumps. 
7. If batter is thick then can add little milk or water. 
8. End add vinegar and mix well. 
9. Pour into the pan and bake for 35 to 40 mins.