1. Heat oil in a large pan over medium heat add onion cook and stir until translucent (about 5 mins). Mix beef bouillon cubes and water until cubes are softenend and starting to dissolbe then pour into saucepan. Bring to a simmer stirring to disolve the cubes. Mix in tomato paste, splenda, worcestershire sauce, dijon mustard, liquid smoke, salt, cider vinegar and pepper sauce. Stir until splenda has dissolved. 2. Bring to a simmer, reduce heat and simmer 25-30 minutes stirring frenquently. For best results cover and refigerate overnight. Store in frig up to 1 week.