- Begin by pouring 1 cup of pineapple juice into a saucepan and adding 1/2 cup of brown sugar. 
- Whisk them together until the sugar completely dissolves. 
- Add 1/3 cup soy sauce, 1/4 cup Jack Daniels whiskey, 1 tablespoon lemon juice, and 1/2 teaspoon cayenne pepper. 
- Mix the ingredients until they're well combined. 
- Introduce 1 tablespoon of minced garlic and 1/2 cup diced white onion into the saucepan. 
- Stir to integrate these aromatics thoroughly. 
- Bring the mixture to a gentle boil, then reduce the heat to low. 
- Let it simmer, stirring occasionally until it's reduced by half and thickened. 
- Once the glaze thickens, remove it from the heat and let it cool to room temperature before using.