Mix sugar and butter until they are fluffy add the eggs gradually,followed with vegetable oil,vanilla flavour and vinegar, mix again then add the dry ingredients mix them until everything is well combined.

Divide the batter into two,add strawberry flavour to the other part

Pre heat your oven,bring your cupcake container put the vanilla batter in the cupcake container add the strawberry flavoured batter mix slowly with toothpick and bake.