1. In any type of jar fill it up 3/4 of the way with any kind of cooking oil.
2. In another bowl pour around 1/4 cup of white vinegar and add a food colouring then mix.
3. When you are adding the food colouring add it until the colour is quite dark.
4. Put in the baking soda after you have combined all the ingredients.
4. This is what it will hopefully turn out like . . .
