This has been a firm favourite at church picnics over the years, according to reliable sources in the congregation.
Ingredients:
12oz/340g plain flour (dry measure into measuring cup)
3 tbsp. cocoa powder
1 tsp. baking soda
8oz/225g sugar (use measuring cup)
1 tsp. baking powder
1/2 tsp. salt
1 tsp. vanilla essence
1 tbsp. vinegar
5 tbsp. vegetable oil
Method:
Sift all dry ingredients into an ungreased cake tin (about 8 inch or 23cm square tin).
Make three depressions into the dry ingredients and put into the different holes the vanilla, vinegar, and vegetable oil.
Pour over all 8 fluid oz/ 235ml of warm water. Stir until a thin, well mixed smooth batter forms.
Put into 350F/180C/160C fan oven/Gas 4 for 30 minutes and 'hope for the best'.