Step 1

Add olive oil to a small, heavy bottom saucepan over medium heat. Saute the shallots and garlic until soft and fragrant. Add in the remaining ingredients and simmer over low heat for 20 minutes, until rhubarb is soft and cooked through.

Step 2

Pour mixture into a blender or use an immersion blender to thoroughly blend ingredients. Add water or chicken stock, a quarter cup at a time, while blending. Continue to add water until desired barbecue sauce consistency is reached. Blend until completely smooth.