How many kale recipes have you come across in which the directions tell you to reserve the stems for “another use” or even discard them altogether? Well, friends, this is your other use. Those rigid stems and ribs we often remove are the star of the show here, and they’re every bit as fresh and earthy as their leafy counterparts. Used raw, they’re a great pairing for the tangy lemon in this pesto. You’re not solely limited to kale stems, either; try this with your other neglected stems, such as collards, cauliflower, or broccoli.