How to Make It
Melt butter in a small, heavy saucepan over medium. Add garlic; cook, stirring constantly, until fragrant but not browned, about 30 seconds. Add lime juice, maple syrup, soy sauce, and red pepper; stir to combine, and bring to a simmer. Stir together 1 teaspoon water and cornstarch in a small bowl; add to sauce. Cook, stirring often, until sauce thickens, about 2 minutes.