Variations; Roasted or raw bell peppers, yellow onion, pearl onion, red wine, red wine vinegar, shallots, habanero, bacon, pancetta, prosciutto, salami, capicola, pastrami, pepperoni, sausage, chicken, beef, beef stock, demi glace, roasted poblano, celery, celery seed, fennel, fennel seed, olive, compound butters, arugula, spinach, zucchini, ricotta, romano, gruyere, parmesean, pecorino, mozzarella, pecorino, goat cheese, basil, oregano, zucchini, yellow squash, eggplant, peppadew, pepperjack, red onion, thyme, chives, scallions, leeks, caramelized onions, crushed pepper flakes, parsely, cilantro, vegetable stock, balsamic, asiago, asparagus, broccoli, capers, sherry, corn,