Heat a large skillet over medium high heat. Add bacon and cook until brown and crispy, about 6-8 minutes. Reserve 1 tablespoon excess fat; transfer bacon to a paper towel-lined plate.

Melt butter in the skillet. Add garlic and shallot, and cook, stirring frequently, until fragrant, about 2 minutes.

Whisk in flour until lightly browned, about 1 minute. Gradually whisk in half and half until slightly thickened, about 3-4 minutes. Stir in sugar; season with salt and pepper, to taste.

Stir in corn; reduce heat and simmer, stirring often, until thickened, about 8-10 minutes.

Serve immediately, sprinkled with bacon and garnished with chives, if desired.