Variations; Parsley, mint, oregano, chives, scallions, tarragon, dill, thyme, arugula, spinach, watercress, sage, rosemary, pesto, pine nuts, walnuts, honey, ginger, capers, asparagus, olive, lemon, lime, crushed pepper flakes, habanero, bacon fat, parmesean, romano, gruyere, parmigiano reggiano, pecorino, mozzarella, manchego, feta, fennel, kale, corn, leeks, sofrito, red wine vinegar, champagne or rice vinegar, shallots, caramelized onions, peas, mushroom, paprika, dijon, serrano, poblano,