Before I really started eating from the bulk bins, my only association with rye was the bread my grandmother would make. Rye flour comes from rye berries. Rye is closely related to both barley and wheat but has a unique taste that I find to be a tad stronger than wheat. Rye comes in berries, cracked form, flakes (akin to oatmeal), and flour.
Rye makes a good substitute for wheat berries and rice in salads and even some heartier dishes. I find that I mostly use the flakes and the flour but the berries have great potential uses! With most other grains, I soak the rye berries overnight and then cook according to the directions. If I have extra, I often freeze and save for later. Rye Flakes cook up like oatmeal but take a bit more time.
Recipes from around the web:
Rye Berry Recipes
Rye, Kale, and Pomegranate Salad from Scandi Foodie
Rye Berry Bread from Food and Wind
Rye Berry Salad with OrangeVinaigrette from Cooking Light
Avocado and Rye Berry Salad from Food 52
Rye Flour Recipes
Swedish Rye Cookies from 101 Cookbooks
Berry and Apricot Galettes with Saffron from Apt. 2B Baking Co.
Rye Flour Crepe Bowls from Turntable Kitchen
Rustic Strawberry Galette with Seeded Rye Crust from Feasting at Home