Cucumber Sauce

1 cucumber
2 table-spoons brown stock
1 oz. butter
1 table-spoon chopped parsley
Juice of half a lemon
¹⁄₂ pint brown sauce

Peel and split the cucumber lengthwise in four pieces. Take out the seeds. Cut in small pieces. Put into salted water and boil gently for seven minutes. Take off and drain. Melt the butter and add to it the stock, cucumber and parsley. Cook gently for half-an-hour. Add the brown sauce and lemon juice.