A concoction of ice cream with sauce, syrup, fruit, whipped cream, chopped nuts, grated chocolate – the combinations limited only by your imagination and degree of nonchalance about digestion or waistline. The name and the dish are attributed to the ingenuity of an American who complied with a law forbidding the sale of ice cream sodas on a Sunday by simply omitting the soda water and calling the new dish after the day. Serve a sundae in a long, shallow dish, in a tall glass or, for a grand effect, in a brandy balloon.