Tunisian Tuna Sandwich Recipe (Casse-Croûte Tunisien) | Saveur

Ingredients

• 3 Tbsp. olive oil
• 2 garlic cloves, finely chopped
• ½ small yellow onion, finely chopped
• ½ small green bell pepper, seeded and finely chopped
• One 15-oz. can whole tomatoes, drained, crushed by hand
• 1 bay leaf
• Kosher salt and freshly ground black pepper
• 4 Portuguese or hero rolls (8 in. each)
• 2 medium Yukon gold potatoes, boiled until tender, peeled, and thinly sliced
• 1 medium ripe tomato, thinly sliced
• 1 small English cucumber, thinly sliced
• Two 5-oz. cans tuna in oil, drained and flaked
• ½ cup pitted black olives
• ¼ cup capers, rinsed
• 4 pepperoncini, stemmed and halved lengthwise
• ½ cup harissa, or to taste