Triple Chocolate Muffins

Name: Triple Chocolate Muffins
Prep time: 5 min
Cook time: 1 h
Total time: 1 h
Yield: 12 piece
Ingredients: 115 g vegetable oil; 140 g whole milk; 2 egg, large (65-70 g); 225 g sugar; 2 tsp white vinegar; 170 g all purpose white flour; 6 tbsp cocoa powder (all types); 1 tsp baking powder; 1 tsp baking soda; 1 pinch salt; 60 g milk chocolate chip; 60 g white chocolate chip; 60 g dark chocolate chip