FOR THE SANDWICH:
- 1 baguette or 4 ciabatta rolls
- Handful of lettuce leaves, arugula or watercress
- 8 ounces best quality oil packed tuna, drained, in large chunks (2-3 cans Fishwife Albacore Tuna)
- 4 hard-boiled eggs
- Salt and pepper
- 1 serrano chile, thinly sliced, optional
Make the salsa verde: Whiz parsley leaves and 1/2 cup oil in a food processor or blender to a pesto-like consistency, then transfer to a small bowl. (Alternatively, chop parsley by hand and combine with oil.) Add garlic, chopped olives, anchovies, capers, lemon zest and red pepper to parsley mixture and stir well. Season with salt and freshly ground black pepper to taste. Thin with more oil as desired.
Cut baguette crosswise into 4 equal pieces, then split each lengthwise with a serrated knife.
Spread cut sides with 2 tablespoons salsa verde. Put a few lettuce leaves on 1 piece of bread and arrange 2 ounces of tuna over lettuce. Top tuna with 1 egg, quartered. Season egg lightly with salt and pepper. Add sliced serrano chile, if using. Drizzle with a little more salsa verde, then press sandwich closed.