Soak the beans overnight in 2 litres of cold water. The next day, boil the beans in the soaking water, skim and cover and cook over a low to medium heat for about 1 hour until soft. After about 45 minutes add 1 heaped teaspoon of salt
Clean and wash the leek and cut into fine rings. Bring the stock and oregano to the boil, add the leek, bring to the boil again and stew covered for 1-2 minutes. Mix vinegar, sugar, some salt and pepper. Fold in the oil. Drain the beans on a sieve and put them in a large bowl. Add the leek with the broth and vinaigrette, mix well. Soak the beans for about 1 hour and let them cool down
Wash, drain and dice the tomatoes. Wash parsley, shake dry and chop. Drain tuna and pluck into pieces. Coarsely crumble feta cheese. Mix tomatoes, tuna, feta cheese and parsley into the bean salad. Season to taste with salt and pepper. Let it stand for another 30 minutes. Delicious with baguette
waiting time approx. 13 1/2 hours