NIçOISE SALAD WITH BASIL AND ANCHOVY-LEMON VINAIGRETTE

Steps:

• Make the vinaigrette: Using the flat side of a knife, smash garlic clove, anchovy fillets and salt into a paste. Transfer to a small bowl and stir in lemon juice, zest and mustard. Using a whisk, slowly pour in olive oil while stirring constantly. Adjust seasoning as needed.
• Place potatoes in a medium pot and cover them with 2 or 3 inches of cold water. Salt the water and bring to a boil. When water comes to a boil, continue cooking potatoes until fork tender, 10 to 15 minutes more. Add haricots verts during the last 1 minute of cooking (if using regular green beans, add them during the last 2 to 3 minutes of cooking depending on how thin they are). Drain vegetables and let sit until cool enough to handle but still quite warm. Halve potatoes, transfer to a small bowl along with the haricots verts and dress everything to coat with some (but not all) of the vinaigrette. When completely cool, toss in chopped basil.
• On a large platter or four individual plates, arrange potatoes and haricots verts, radishes or cucumbers, tomatoes and tuna, and hard-boiled eggs, if using. Scatter olives over the top and drizzle with remaining vinaigrette. Serve garnished with freshly ground black pepper, flaky sea salt and torn basil leaves.