Make as above, but beat into the sweetbread dice the brains, which have been washed, scalded, and freed from membranes. Add for each cupful of the mixture a tablespoonful of fine crumbs, wet up with stock and heat in a vessel set in another of boiling water, then stir in a beaten egg, and when smoking hot, turn out to cool and stiffen. When cold proceed as with sweetbread croquettes.

Or—

Make them of the brains alone, omitting the stock, and proceeding in all things else as with other croquettes. Serve with pressed spinach, heaping the croquettes or balls about the base of the mounded vegetable.