4 oz butter,  2 oz sugar, 3 heaped tsp condensed milk,  6 oz flour, 1 tsp Baking powder,  2tbsp bournvita (or milo)

Cream butter & sugar, add condensed milk. Add dry ingredients and mix well.

Roll into balls and put on a tray and flatten with a fork.

Bake 20 minutes in a moderate oven.