Omega-3 rich sardines over peppery arugula with cherry tomatoes, red onion, capers, and lemon vinaigrette.
Drain sardines and pat dry.
Place arugula in a large bowl.
Halve cherry tomatoes and thinly slice red onion.
Add tomatoes and onion to arugula.
Arrange sardines on top of the salad.
Whisk olive oil, lemon juice, Dijon mustard, salt, and pepper.
Drizzle dressing over salad and serve immediately.
Nutritional data: CIQUAL (ANSES, France) cross-referenced with USDA FoodData Central.