Use medium sized smelts, clean carefully, and wipe them dry. Dredge them with salt and pepper; dip them in egg and roll them in crumbs. String three or four on each skewer, the skewer passing through the eyes. Place them in a frying-basket, a few at a time, and immerse in very hot fat. Prepare at a time only as many as will go in the frying-basket. The time given to rolling them is only as long as required for the fat to regain the right degree of heat. Dress on a napkin and serve with Mayonnaise, Tartare sauce, or quarters of lemon.