Bring the water or broth to boil and add the peas. Reduce heat to medium-low and cook until peas are soft, about 2 hours.
When the peas are soft, add carrots, onion, and white parts of the leeks. Cook for 20-30 minutes until the vegetables are soft. Add celery and cook for 5 minutes. Add salt, tamari, and green part of the leeks and cook for 7-10 min more. Serve.
Serve with a big salad or with your favorite whole grain bread.