Simply poached lobster is one of the greatest of seafood pleasures, and we believe that with our simplest technique we’ve made it not only foolproof but perhaps even humane. In any case, it’s a great technique to build on—everyone eventually gets tired of plain boiled lobster—and we do so, with a flavorful butter sauce, a fragrant sweet-wine sauce, and two powerful sauces, one based on anchovies, the other on tamarind. The briny flavor of lobster not only stands up to these sauces but seems made for them as well.