*Leeks supply a delightfully mild onion flavor and their subtle sweetness pairs well with bitter greens. I don’t worry about cup measurements here, feeling that more of the delicate leeks is not a bad thing! If you don’t have them, several shallots (it’s hard to use too many of these either, as they really cook down) or a sweet yellow onion may be used. An onion will require an additional minute or two to cook down and become lightly golden in spots.
**In place of (or in addition to) the black pepper, you could use a pinch or two of cayenne pepper, Aleppo pepper, or red pepper flakes.
Don’t have a lemon? The acidic note of a light, final squeeze of lemon offers a lovely brightness and rounds out the flavor. If you don’t have one, a teaspoon or two of white wine vinegar could be used.
Have a really big bunch of collards? Some bunches of collards weigh closer to two pounds. If you want to use them all, simply increase the oil and seasonings proportionately and use the widest skillet you have.
Have leftovers? Cover and store in the refrigerator where they will keep for up to 5 days. Gently reheat before serving–although I think they taste great cold too!