3 Tbsp butter, divided into 2 Tbsp and 1 Tbsp
1 cup chopped onion
1 1/2 cups sliced leeks, white and light green parts only
5 cups of chopped celery, and 1 1/2 cups of diced celery  (from one large bunch of celery or two small bunches)
2 cloves garlic, minced
2 bay leaves
4 cups chicken stock
1/2 teaspoon to 1 1/2 teaspoons of salt, to taste
1/4 to 1/3 cup of cream
Freshly ground black pepper to taste
Fresh chopped chives or parsley for garnish