Curry Sauce

Slice an onion and ½ a small apple finely, and fry them in 2 oz. of clarified dripping or butter. Stir in ½ a dessertspoonful of curry powder and the same of flour. Salt to taste. Add ¼ pint of stock or milk, cook gently for 30 minutes, then put all through a sieve, add a few drops of lemon juice, and reheat.