0.5 teaspoon fleur del sel (preferably flaky sea salt or fleur de sel)
1 spring onion thinly sliced
2 lb tomatoes ripe
Equipment
bowl
whisk
plastic wrap
Directions
Whisk together oil, vinegar, brown sugar, salt, and pepper in a small bowl. Arrange one third of tomatoes in 1 layer on a large plate, then drizzle with some dressing and sprinkle with some scallion. Make 2 more layers of tomatoes, drizzling each with dressing and sprinkling with scallion.
Tomatoes can be sliced and dressed, without scallion, 6 hours ahead and chilled, covered with plastic wrap.
Sprinkle scallion over tomatoes just before serving.