Tip - How to Remove Acid in Tomato Sauce Using Butter | LIVESTRONG.COM

Marinara sauce, or tomato sauce, is used in many Italian dishes, including lasagna, spaghetti and even pizza. Because tomatoes are an acidic fruit, the sauces made from them also are acidic. The high acidity can cause upset stomach, heartburn and acid reflux, according to the Mayo Clinic, but the acid content can be diminished. Sugar is a common...