In a saucepan over medium heat, add oil, onion/garlic and saute until tender.
Part of the baseball food trifecta (BBQ, sandwiches and beer), this BBQ sauce recipe will be a treat for your palate as the sweet hint of BBQ meets the malty taste of Guinness beer.
Add all other ingredients (except tomato paste) to saucepan a whisk to integrate.
Bring to a boil, reduce temp. to simmer, cover, and stir occasionally for 10 minutes.
Mix in tomato paste, recover dish and simmer for additional 30 minutes.
Remove saucepan from heat when desired sauce consistency is reached.
Pour into blender and puree until smooth.
Set aside and cool to room temp. before applying to meat.