Use dainty little baking powder biscuits freshly baked but cold, or
white home-made bread for these sandwiches. Only the very tender part of
celery should be used and chopped fine and put in iced water until
needed. Add a few chopped walnuts to the celery and enough mayonnaise
dressing to hold them together; butter the bread before cutting from the
loaf, spread one slice with the mixture and press another over it. If
biscuits are used, split and butter them. They should be small and very
thin for this purpose and browned delicately.