First deseed the fruit. The tip here is dip your finger in cold water then take out the skin from the seed. Then collect all the pulp from the fruit and mash well with fingers. Like in the picture.
Then add maida baking soda baking powder sugar salt cocoa powder and mix well then slowly incorporate the milk vinegar and oil and mix well.
Then add maida baking soda baking powder sugar salt cocoa powder and mix well then slowly incorporate the milk vinegar and oil and mix well.
Now grease 4 muffin moulds well with oil and pour one teaspoon of the batter in each then sprinkle the cooking chocolate over it then pour in one more teaspoon of the batter over it then bake in microwave for 3 mins at 800 degrees. If not in preheated oven at 180 degrees for 15 to 20 mins.
Note you can also use sita phal/ custard apple if ram phal is not available.