To start, cook the bacon until crisp in a medium saucepan. Transfer half of the bacon to a paper towel–lined plate.
In the same saucepan, stir in the garlic and cook until fragrant, about 30 seconds. Stir flour into mixture to make a paste; cook until lightly browned, about 3 to 5 minutes.
Slowly whisk in the broth and heavy cream.