Open beer and let stand at room temperature while preparing vegetables.
Cook bacon in a large soup kettle until crisp. Remove, drain on paper towels, and crumble. Set aside.
Sauté diced vegetables in 2 tablespoons of bacon grease until soft, about 5-7 minutes.
Add condensed chicken broth to the kettle.
Fill the empty chicken broth can with beer and add to the mixture.
Bring to a boil, then reduce heat to low and simmer.
In a small mixing bowl, whisk remaining beer with flour until smooth.
Gradually add beer-flour mixture to the soup, stirring constantly until thickened.
Add half-and-half, crumbled bacon, and shredded cheese.
Heat gently until cheese melts completely, stirring frequently.
Stir in sugar and season with salt and pepper to taste.