Add the bacon to a large pot over medium heat and cook the bacon until crisp. Remove the crisp bacon lardons and set them aside.
Pour in the onions and caramelize over low heat until well browned for about 40 minutes. Stir occasionally.
Next, mix in the celery and garlic and sauté for 4-6 minutes.
Mix in the flour until completely combined.
Pour in the potatoes and stock and bring to a boil to thicken.
Pour in the cream and cook for 3-4 minutes and then puree half of the soup to smooth out and thicken more but still have chunks in it.
Season with salt, pepper, Worcestershire, and tabasco sauce.
Add on optional toppings of sour cream, crispy bacon, shredded cheddar cheese, and sliced green onions.
Notes
Chef Notes:
Make-Ahead: You can make this up to 2 days ahead of time but is perfect to serve up as soon as it is made.
How to Store: Cover and store in the refrigerator for up to 6 days. To freeze, cover, and keep in the freezer for up to 3 months. Thaw in the refrigerator for up to 1 day before reheating.
How to Reheat: Add the desired amount to a medium-size pot and heat over low heat until hot. You may need to add a little water if it is too thick.