Source: Everyday Food, October 2003, marthastewart.com
2 tablespoons canola oil
1/2 small onion, chopped
1 clove garlic, minced
1/3 cup heavy cream
Coarse salt and ground pepper
Heat 1 tablespoon canola oil in a small saucepan over medium heat; add onion and garlic; cook until soft, 5 to 7 minutes. Add chile and cream.
Puree in blender; add water if too thick. Season with salt and pepper.