Veal Sandwiches

Chop some cold roast veal and place in a mortar with salt, pepper and a small
quantity of tarragon vinegar. Slice some hard-boiled eggs, remove the yolks, being
careful not to break the rings of white, place them in the mortar with the veal and
pound well. Spread a small quantity of mixed mustard over some slices of bread,
then lay the white rings of egg on them, and fill each ring with the pounded mixture,
cover them with slices of bread and press them lightly together. Cut the sandwiches
into halves, and serve them.