Salade Niҫoise

Ingredients

• 1 pound good-quality tuna
• 2 tablespoons canola oil
• 7 small red potatoes, unpeeled
• 1/2 pound haricots vent
• 8 cups mixed greens
• 2 red peppers, roasted and sliced
• 3 tomatoes, cubed
• 1/2 cup black olives with pits
• 2 tablespoons capers
• 2 hardboiled eggs, slilced
• salt and pepper to taste
• vinaigrette dressing
• 3 tablespoons white or red wine vinegar
• 1 tablespoon fresh lemon juice
• 1/2 shallot, minced
• 2 teaspoons dijon mustard
• 1/2 teaspoon sugar
• 1/3 cup olive oil