Dr. Martin Luther King Jr. loved the fried catfish and lemon icebox pie at Memphis's Four Way restaurant. Beloved nonagenarian chef Leah Chase introduced George W. Bush to baked cheese grits and scolded Barack Obama for putting Tabasco sauce on her gumbo at New Orleans's Dooky Chase's. When SNCC leader Stokely Carmichael asked Ben's Chili Bowl owners Ben and Virginia Ali to keep the restaurant open during the 1968 Washington, DC, riots, they obliged,...