Yes and no. It all really depends on the acid level of the tomatoes you’re using. Sugar can help neutralize highly acidic tomatoes to balance the flavor and create a pleasing harmony between acidity and sweetness. Tomatoes are naturally both. Sometimes, however, depending on where they’re grown, when they were harvested and whether they are fresh or canned, the acid can be stronger than we like. To tone this down and bring the sauce into a delicious balance, you can add sugar 1/4 teaspoon at a time. Stir it in. Cook it for at least a minute. Taste again, and add another 1/4 teaspoon, repeating as often as necessary to get to the flavor you want. If I use sugar at all, I never go over 1 teaspoon in this recipe.