4 Tomato and Basil Sorbet

This is the recipe for show-offs. When you serve tiny little dollops of this orangey greeny ice as a first course on huge plates garnished with fresh leaves of lettuce-leaved basil, it says to the whole world not only that you own an up-to-date food processor, but that you also have a Gelato-chef or other single-unit ice-cream maker. Basil is of course the darling of nouvelle cuisine, and his a