Chocolate Chips Muffins

Who can say no to chocolates :)
Ingredients (makes about 12 muffins)
1 1/2 cup Maida
[OR 1 cup Maida + 1/4 cup Cornflour]
1/4 cup unsweetened cocoa
3/4 th cup granulated sugar
1 tsp Baking powder
1/4 tsp salt
2 tbsp unsalted butter
1 cup milk
1 tbsp vinegar
little choco chips for topping

Method:
Sift together flours, cocoa, soda & salt (thrice).
Mix butter & sugar and beat till creamy.
Add maida & milk alternately & keep mixing. (always end with maida)
Mix in vinegar & mix well.
Spoon the batter in muffin cups.
Sprinkle the choco chips on top.
Bake in preheated oven at 180 degree C for 20 mins.
Check with toothpick, it should come out clean or bake for another 5 mins.

Tips:
If you want Muffins to be sweeter, add 2 tsp extra sugar.