For some people, cooking is the ultimate act of self-care. Rachel Riggs is one of them. As someone who is immunocompromised, she has spent years identifying foods that her body tolerates, and with that under control, began developing recipes that have come together in her delightful first cookbook, “In Good Health” (Figure 1 Publishing, $34.95). Love the recipes, especially the simple, you can’t eat just one slice chocolate cakes. But there’s far more and I’ve included three of them you’ll want to try in my new story about the book for The San Diego Union-Tribune’s food section.