I make this salad at least once a week in the summer. I try to use tomatoes with a low acidity and a good amount of sweetness. I've recommeded using heirloom tomatoes here but sometimes a good farm stand tomato is even better. —sweet enough
cucumber, peeled, cubed, and seeded if there are a lot of seeds
wisk together the olive oil, lemon, honey, salt and pepper. to assemble salad place arugula, cucumber, watermelon, tomatoes, mint, and onion in a bowl and gently toss with the dressing. sprinkle the feta over the top and serve. it's essential that you serve this immediately or the moisture in the tomatoes and watermelon will turn the whole salad into a soggy mess.