Make this recipe a recipe that people in that category can eat. categories: ['low_fat'], recipe: combine all ingredients, simmer in a pot at least 30 minute the longer you simmer the better it is. i usually simmer at least 1 hour. cook's note: sauce can be made ahead of time and kept covered in the refrigerator for up to 3 days or frozen for up to 3 months.

Target recipe: in a medium saucepan, heat olive oil lightly brown onions, stirring occasionally. add chicken stock and bring to a simmer. add remaining ingredients and bring to a boil. cover saucepan and simmer for 30-45 minutes, stirring occasionally. pour mixture into food processor or blender and blend until smooth. use immediately or store in refrigerator.