Inspired by the beloved French niçoise salad, our take keeps the classic combination of tomatoes, boiled potatoes, tender green beans, jammy eggs, and olives—though we often reach for green over the petit black niçoise ones—but adds in radishes and cucumbers, plus uses little gems and shaved fennel as a base for extra freshness and crunch. Traditionally made with tuna (fresh or canned), any good tinned fish works beautifully here, from the classic oil-packed tuna to plump sardines and mackerel fillets. Hot smoked salmon or sturgeon is great here, too, or even leftover grilled or roasted salmon would be a welcome fishy addition.
The dressing is really where the magic is. Mustardy and punchy, this classic vinaigrette gets amped up with savory, smoky, umami flavor with a couple teaspoons of Everything Grill Seasoning (not just for grilling!). Trust me, this will become one of your go-to everyday dressings. Whenever I make this salad, I make a double batch of the dressing to have more on hand to use throughout the week—and, I highly recommend you do the same.