Today I finish up my look at Southern-style collard greens. On Thursday, I looked at bacon, one of the key ingredients in most recipes. Another is ham. As long as the ham is lean, it has much more protein than fat so that’s not a real concern at 45 calories per ounce. That leaves us with the greens and onions.

Adding a large white, yellow, or red onion doesn’t add many calories but it adds plenty of phytonutrients. It adds flavonols such as quercetin and kaempferol as well as another type of phytonutrient called allicins. Research shows . . .

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