He came to share some practical wisdom about tasty, healthy eating. They came to see a reality TV star, to sample some tacos – and, in some cases, to flirt. Sage Health, a healthcare provider focusing on seniors, brought Mississippi chef Nick Wallace to its midtown Mobile clinic Wednesday for a “Cooking with Sage” demonstration offering to teach seniors “how to cook with fresh, healthy ingredients, health-conscious shopping tips, and healthy eating habits.” And if that seems a little dry, Wallace brought not just the energy he’s shown on “Chopped,” “Top Chef” and other shows, but a very practical approach to cooking flavorful meals from healthy ingredients.