Method
1. Place carrot, onion, garlic and butter into Thermomix bowl
2. Chop with MC on - 6 sec, speed 7
3. Cook - 5 min, Varoma, speed 1
4. Add remaining ingredients
5. Blend with MC on - 10 sec, speed 4
6. Cook - 1 hr, 80°C, speed 1, MC off
7. Check consistency and cook longer if you like a thicker sauce
8. Taste for heat, add more chipotle chili and re-blend if desired
9. Otherwise, pour into sterilized jars and keep refrigerated between uses