Remove half the bun from each White Castle hamburger and discard. Place three of the remianing half-sandwiches in a food processor (pickle optional) and add one egg and 1/2 cup milk.
Pulsate until the ingredients are chopped, but be carefull not to puree. Empty into a bowl and repeat the process three more times.
Pack the mixture into an ungreased, standard-sized bread pan. Place pan into a larger pan and pour boiling water into the larger pan to a level half the depth of the bread pan. Bake in 350 deg F. oven for one hour.
Cool loaf in refrigerator; overnight is best. Turn it out on a plate, decorate with cream cheese and cut pate into slices.