In a heavy-duty saucepan heat the olive oil. Add the chopped onions and sweat them for 5 minutes until a golden brown. Add the leeks, celery and all the peppers and sweat for 2 minutes. Add the garlic and when fragrant add all the remaining ingredients. Except.
Step 2
Let reduce on medium to low heat for 45 to 60 minutes. And add the liquid smoke and the Bourbon.
Step 3
Blend in a blender or use an immersion blender and puree to a very fine texture.
Step 4
For extra-smooth texture, strain through a fine sieve. At the end you can always add a little butter to make smoother and silkier sauce.