Italian-Style Tuna Sandwich

Ingredients

• 1 whole wheat sourdough boule
• handful of lettuce leaves, arugula or watercress
• 2 – 5 oz. cans Genova Yellowfin Tuna in Olive Oil, drained, in large chunks
• 4 hard­ boiled eggs
• 1/4 red onion or shallot, thinly sliced
• salt
• pepper
• 1 serrano chile, thinly sliced, optional
• 1 cup italian parsley leaves, washed and dried
• 1⁄3 cup extra virgin olive oil, plus more as needed
• 1 garlic clove, minced
• 1⁄4 cup roughly chopped green olives, such as castelvetrano
• 1 anchovy fillet, chopped
• 1 tablespoon chopped capers
• zest of 1 lemon
• 1 teaspoon tarragon leaves (or tarragon vinegar)
• pinch of crushed red pepper