Ingredients

• bread (e.g., half-baguette, ciabatta, toasted bread)
• Spanish potato omelet
• tomato
• canned tuna
• lettuce
• red onion
• mayonnaise

Preparation

1. Cut the bread in half. Place a piece of omelet on the bottom half. Spread mayonnaise on the top half of the roll.
2. On the bottom half, on the omelet, place drained tuna, then tomato, thinly sliced red onion and a lettuce leaf. Cover with the other half of the bread.
3. The sandwich can be warmed (toasted) in a sandwich toaster.