- a 28-ounce can crushed tomatoes in puree (preferably Italian; about 3 1/2 cups)
- 3 tablespoons olive oil
- In a large non-reactive saucepan bring tomatoes and oil to a simmer and simmer, uncovered, stirring occasionally, 20 minutes, or until sauce is reduces to about 2 1/2 cups. Season sauce with salt and cool to room temperature. (Sauce keeps, covered and chilled, 5 days.)