Ingredients:

1 2/3 cups flour

1 cup sugar

¾ cup cocoa

1 teaspoon bicarbonate of soda (baking soda)

1/3 teaspoon salt

1 cup sour milk

½ cup melted butter

½ teaspoon vanilla

Instruction:

Sift the dry ingredients together.

Beat in the sour milk, butter and vanilla and stir until smooth.

Pour into a greased cake tin and bake at 375°F for about 30 minutes.