Put the butter on a plate with half a teaspoonful of lemon-juice, a dust of cayenne, and the very finely chopped parsley.

Work all these well together with a knife. If necessary, put it in a cold place to harden before putting it in the forcing-bag.

N.B.-If no cassolette cases are available, use small, deep patty-tins; they do very well, though they are perhaps not so effective as the proper cases.