Whether we should eat a diet similar to the hunting and gathering societies of our evolutionary past, which consisted of more meat, more nuts and berries, and less grain and refined sugar, is an open question.

But it's clear that Paleo, gluten-free, and vegan diets are influencing dining trends, and cooks and chefs need to provide eaters with options to capitalize on the trend.

Chef Griffin explores what's behind these diet requests so you can understand what people will eat, what they won't eat, and why. He delivers guidance that will enable you to make customers feel welcome...