Step 1

In a large bowl, toss together the cucumber, tomatoes, red onion, lemon juice, vinegar, salt, and several grinds of pepper. Chill in the refrigerator for 10 minutes.

Step 2

Transfer to a serving bowl, leaving any excess juices behind. Drizzle with the olive oil, sprinkle with the herbs, and toss. Sprinkle with flaky sea salt, season to taste, and serve.