5 medium plum tomatoes, halved lengthwise, seeded, and thinly sliced
1/4 red onion, peeled, halved lengthwise, and thinly sliced
1 Kirby cucumber, halved lengthwise and thinly sliced
A generous drizzle of extra-virgin olive oil, about 2 tablespoons
2 splashes red wine vinegar.
Coarse salt and black pepper.