Open one quart can tomatoes, turn from can, and let stand one hour that they may be re-oxygenated. Add three tablespoons sugar, and season highly with salt and cayenne; then rub through a sieve. Turn into one-half pound breakfast-cocoa boxes, cover tightly, pack in salt and ice, using equal parts, and let stand three hours. Remove from mould, arrange on lettuce leaves, and serve with Mayonnaise Dressing.