Unlike other nut varieties that can be purchased unshelled, pistachios are often sold in the shell, leaving eaters up to their own devices to open the pieces to enjoy or use in recipes.

Nuts are full of protein, some have more than an egg. Here, dietitians share ones with the most protein and nutrients to add to your diet, like pistachios.

A nut is the edible seed or fruit of a plant, usually surrounded by a hard or brittle shell. Rather like an egg is to a new chick, a nut helps a new plant to grow thanks to its power-pack of ...