In a large pot over medium-high heat, cook the chopped bacon until it is browned and crispy. Then remove the bacon with a slotted spoon to a towel lined plate, but leave about 1 tbsp. of the drippings in the pot. Add the celery, onion and carrot to the pot and cook, stirring occasionally, until they begin to soften up, about 5 or so minutes. Then add the garlic and cook another minute or so, until fragrant.