A generous squeeze of Meyer lemon—more fragrant and less acidic than standard grocery store lemon—gives this simple salad a fresh boost.
In a medium bowl, whisk together olive oil and lemon juice and season generously with salt and pepper to taste. In a large bowl, gently toss watercress with about half of dressing, then add as much more dressing as you like.
Make ahead: Up to 1 day, the stemmed watercress and the dressing, chilled separately.
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.