Castilian-Style Cucumber and Tomato Salad

Ingredients

• 1/2 English cucumber, peeled, seeded, and sliced
• 1/2 small red onion, cut into thin strips
• 1 cup cherry tomatoes, cut into halves
• 1/2 cup chopped fresh parsley
• 1/4 cup sliced green olives
• 2 small garlic cloves, minced
• 1 tablespoon extra-virgin olive oil
• 2 tablespoons fresh lemon juice
• 1/4 teaspoon salt
• 1/4 teaspoon freshly ground pepper
• Garnish: arugula leaves