Cook the garlic and ginger: In a medium saucepan, heat a little oil over medium heat. Add the minced garlic and fresh ginger, cooking for 2-3 minutes until fragrant. Be sure not to burn them—this step releases all the aromatic oils.
Add the liquids: Pour in the bourbon, soy sauce, Worcestershire sauce, and brown sugar. Stir the mixture until the sugar dissolves completely.
Simmer and thicken: Bring the sauce to a gentle simmer. Let it cook for about 10-15 minutes, allowing it to reduce and thicken. The bourbon will mellow out, leaving behind a smooth, rich flavor.
Adjust seasoning: Taste the sauce and adjust the sweetness or spice level with more sugar, soy sauce, or even a pinch of red pepper flakes for a kick.
Cool and store: Once the sauce has thickened to your desired consistency, remove it from heat and let it cool. You can store it in an airtight jar in the fridge for up to 2 weeks.