Remove bacon to paper towels to drain; set aside. Add butter to the drippings (you can spoon out some of the drippings if you don’t want to ues that much); saute celery, leek, and onion until tender. Add garlic; cook 1 minute longer. Stir in the potatoes, broth, clam juice, salt, pepper and thyme. Bring to a boil. Reduce heat; simmer, uncovered, for 15-20 minutes or until potatoes are tender.