Jack Daniels' barbecue sauce

Amazing stuff! We enjoyed it over the Labor Day weekend at a restaurant that shall not be named, because they don't share their recipes. I started with some ideas that I scrounged up online, and started experimenting. Hey, it was a hardship, but someone had to do it! This is the version we like best:

Jack Daniels' barbecue sauce

1/2 c Jack Daniels
1/4 cup onion, chopped
2 cloves garlic, minced
1 cup ketchup
3 T apple cider vinegar
1 T Worcestershire sauce
1/4 cup brown sugar
1/3 cup molasses
1/2 t Liquid Smoke
1/4 t Tabasco sauce
1 - 2 T tomato paste
Salt and pepper to taste
More Jack Daniels

In a heavy saucepan, combine the Jack, onion, and garlic. Saute about 10 minutes on medium low heat. Add the remaining ingredients through the Tabasco sauce. Bring to a boil; reduce heat and simmer for about 15 minutes. Add tomato paste and continue simmering. Add salt and pepper and more Jack if you want a stronger flavor (who doesn't?). I added an extra shot.