Variations; Orange zest, lime juice or zest, sage, parsely, parmesan, asiago, parmigiano reggiano, pecorino, gruyere, cheddar, swiss, vinegar, vegetable stock, bacon, pancetta, chives, scallions, prosciutto, ham, celery seed, fennel seed, shallots, habanero, jalapeƱo, roast bell pepper puree,