Bean Casserole with Fresh Tuna

Name: Bean Casserole with Fresh Tuna
Prep time: 10 min
Cook time: 40 min
Total time: 40 min
Yield: 6 portions
Ingredients: 50 g extra virgin olive oil; 100 g onions; 100 g green peppers; 130 - 150 g ripe tomatoes; 2 garlic cloves; 1 dried bay leaf; 1 tsp fine sea salt; 1 pinch sugar; ¼ tsp paprika; 150 g potatoes; 600 g water; 1 fish stock cube (for 0.5 l); 800 g tinned large white beans; 500 g fresh tuna; 1 Tbsp fresh parsley