INSTRUCTIONS
1. In a saucepan over medium heat, combine oil, onion, garlic, and salt. Stir occasionally and sweat the mixture until onions are tender and slightly golden.
2. Stir in tomato paste.
3. Add red wine to deglaze the pan and continue to cook until the liquid is reduced by half.
4. Add remaining ingredients and simmer over very low heat for 1 hour, stirring occasionally.
5. Remove bay leaf.
6. Transfer sauce to a food processor or blender and puree until smooth.
7. Transfer to a bowl to cool. Once cooled, use immediately or refrigerate for up to 2 weeks.