Thai Cucumber Salad with Peanuts

Name: Thai Cucumber Salad with Peanuts
Cook time: 20 min
Total time: 20 min
Cuisine: Asian, Thai
Ingredients: 1/2 red onion, very thinly sliced; 2 large English cucumbers, halved lengthwise, seeded and sliced crosswise 1/4-inch thick; 1/3 cup packed chopped fresh cilantro; 1/2 cup salted peanuts; 1 large jalapeño pepper, seeded and minced (or use 1-2 Thai chiles for more heat); 1/4 teaspoon salt (optional); 1/4 cup fresh lime juice, from 2-3 limes; 2 tablespoons vegetable or canola oil; 1-1/2 tablespoons fish sauce; 2 tablespoons sugar; 1 garlic clove, minced