Instructions
Heat oil in a Dutch oven over medium-high heat. When oil begins to simmer, add onions, carrots, and celery and sauté, stirring frequently, until vegetables have softened considerably, about 15 minutes. Add garlic and sauté 1 minute, stirring and being careful not to burn.
Add white wine to deglaze pan and bring to a simmer. Simmer until reduced by half. Add tomatoes. Reduce the heat to medium and simmer until the vegetables break apart when pressed gently against the side of the pan with a spoon, 1 to 2 hours.
Remove bay leaves. Blend with an immersion blender or in a blender in batches until smooth. Season with salt and pepper.
Keeps for several days chilled and freezes well.