Fava Bean and Cucumber Salad with Feta & Sumac

Fresh fava beans aren’t readily available in the Hudson Valley, but Sue, one of my favorite farmers who owns and runs Blue Star Farm, has them for a week or two in mid-June and I greedily get my hands on as many as I can. Fava beans are frequently found in Mediterranean and Middle Eastern cuisines; this dish is driven by the latter and utilizes creamy feta cheese and tangy sumac for brightness. Because favas are a rarity in these parts, I like to keep the dressing preparation simple, so the