walnuts

A brain-shaped tree nut (*Juglans regia*) known for its high concentration of polyunsaturated fats (omega-3s) and a slightly bitter, astringent papery skin. Toasting them mellows this bitterness, bringing forward a rich, buttery, and deeply earthy flavor that pairs beautifully with dark chocolate or blue cheese. **Selection & Storage:** Buy shelled walnuts that look plump and light-colored; shriveled or very dark nuts may be old. They are highly susceptible to rancidity, so always store them in an airtight container in the freezer.