Cucumber and Sweet-Onion Salad

INGREDIENTS

• 3 English cucumbers, halved lengthwise and thinly sliced on the diagonal
• 1 medium sweet onion, such as Vidalia, halved and thinly sliced
• 1/2 cup fresh dill, coarsely chopped
• 3 tablespoons olive oil
• 3 tablespoons fresh lemon juice
• 2 tablespoons white-wine vinegar
• Coarse salt and ground pepper