1 c flour    1/4 tsp salt   1 tsp bp   1/2 c cornflour
 1/4 c cocoa  1/2 tsp Baking soda   2 eggs
 100g melted butter    3/4 c sugar   3/4 c milk  
 1 tsp vanilla  2 tsp vinegar
 Sift dry ing 2x  Beat eggs and sugar  add butter 1/2 the milk and vanilla beat med speed spoon in dry ing.  beat 1 min  mix remaining milk with vinegar add and beat 1 min
 Bake 100c 30-35 mins