Soak the beans: Place 400 g of dried white beans in a large bowl. Add 1 tablespoon of salt and 1 litre of water. Stir until the salt dissolves completely. Leave the beans to soak for 8–10 hours or overnight.
Rinse the beans: Drain the soaking water and rinse the beans thoroughly under running water.
First boil and rest: Transfer the beans to a large pot and add 1.5 litres of fresh water. Bring to a boil and simmer for 15 minutes. Remove the pot from the heat and let the beans rest in the hot water for a few more minutes. This resting time helps the beans soften further, making them more tender.
Prepare the vegetables: Meanwhile, prepare the carrots, red pepper, onion, and baby celery.
Drain the beans: Discard the water from the first boil and drain the beans thoroughly.
Add the vegetables: Return the beans to the pot and add the prepared vegetables. Cooking the vegetables directly in the soup gives a lighter result, while sautéing them first is an option for a richer flavor.
Continue cooking: Pour in 1.5 litres of hot water and simmer for approximately 30 minutes. Continue cooking as needed until the beans are tender.
Add the tomatoes: Once the beans have softened, add the tomatoes. Stir gently to combine. Adding the tomatoes juice at this stage helps the beans cook until tender before the tomato is introduced.
Add the olive oil and seasoning: Pour in 50 ml of olive oil and season with salt and freshly ground black pepper. Stir gently to combine.
Final simmer: Continue simmering for another 20–30 minutes, allowing the flavors to blend and the soup to develop its rich, comforting taste.
Serve: The hot Fasolada into bowls and enjoy this traditional Greek comfort food!