How to Make It
Heat a large skillet. Add the tomatoes and cook over high heat until sizzling, 1 minute. Add the vinegar and sugar and a pinch each of salt and pepper and bring to a boil; transfer the tomatoes to a bowl. Boil the juices over high heat until reduced to 1/4 cup, 5 minutes. Stir the juices, olive oil and basil into the tomatoes and season with salt and pepper. Serve the relish warm or at room temperature.