This salad is crunchy, sweet, salty, bright, and refreshing—in other words, it’s perfect for summer. Peak-of-freshness peaches are the way to go here: If they’re still ripe, but a little firm, that’s perfect. Bonus points if you get them at a roadside stand. If you can find fennel with intact fronds, get that rather than fennel with the tops cut off—the fronds help make the salad feel special. Serve with flaky white fish and a nice glass of white wine or rosé.