Look for packages of cod roe in the freezer case at your supermarket or online. You may also be able to find fresh roe at your neighborhood fish market (or at least you can ask their for their recommendation). In this recipe, the roe are coated in breadcrumbs and then fried until golden brown on the outside, then sliced and served in a salad that includes arugula, tomato wedges, and sliced roasted pepper, with cilantro and lemon as the garnishes.