Mix the oil and sugar till light,add the eggs, butter milk and mix, add vinegar set aside

Mix the flour and baking powder

Transfer and flour into the mixture, and mix

Divide the batter into 3,pour red food color to the first, add green food color to the second, and leave the third in white

Put your cupcakes sheet into the pan, add the red batter,

Using piping bag, make a zigzag with the green batter on top of the red,