A perfect and irresistible idea: A cookbook filled with delicious, healthful recipes created for everyone on a tight budget—and a cookbook with a strong charitable component: With every copy of Good and Cheap purchased, a second copy will be given to a person or family in need.While studying food policy as a master’s candidate at NYU, Leanne Brown asked a simple yet critical question: How well can a person eat on the $4 a day given by SNAP, the U.S. government’s Supplemental Nutrition Assistance Program informally known as food stamps?