In a bowl add water the giant beans and leave overnight to rise (12h).
In a pressure cooker add enough water and boil the beans for 10 minutes.
Strain the beans and discard the boiling water.
In the pressure cooker sauté with olive oil the onion and the carrots.
Add beans, stir and add all the rest. Tomato juice, celery and parsley.
Add enough water until they cover and little more.
Close the pressure cooker and let the ingredients boil for about 30′ (time is proportional to the pressure cooker, so cook as you usually cook legumes).
When cooking time finished, let the pressure cooker to cool, open it and pure the giant beans into a pan.