Irish lamb stew is a lesson in how restraint can produce extraordinary food. Lamb, potatoes, carrots, onions, and thyme — that is essentially the whole recipe. No wine, no tomatoes, no complex spice blends. Just good ingredients simmered together until the lamb is tender, the potatoes are breaking down into the broth, and the kitchen smells like a cottage in Connemara. Simplicity is the entire point.