I’ve always loved plums that are red inside. My favorite is the Santa Rosa variety—the juicy, sweet-tart plum I devoured as a kid—but I rarely spot them in stores anymore. The closest substitute is the variety marked with PLU code 4042. It feels funny recommending a fruit by its number, but that’s how most grocery stores identify their produce these days! Whatever you call them, these ruby-red, sweet beauties are the perfect match for peak summer tomatoes. This Summer Plum and Tomato Salad is a celebration of the season, bringing together two of summer’s best flavors in one fresh, colorful dish.