Michael Ruhlman sings the praises of schmaltz (or rendered chicken fat), a staple ingredient in traditional Jewish cuisine. But schmaltz is at risk of disappearing from use due to modern dietary trends and misperceptions about this versatile and flavor-packed ingredient. The Book of Schmaltz: Love Song to a Forgotten Fat takes a fresh look at traditional dishes like kugel, kishke, and kreplach, and also ventures into contemporary recipes that take advantage of the versatility of this marvelous fat.