Variations; Half and half, bechamel, parsely, basil, oregano, zucchini, pancetta, bacon, parmigiano reggiano, gruyere, romano, goat cheese, Italian seasoning, lemon peel seasoning, orange zest, shallots, crushed pepper flakes, chives, scallions, leeks, yellow onions, pearl onions, peas, dried minced onions, herbes de provence, rosemary, yellow bell pepper, roasted bell peppers, vinegar