How much citric acid used in tomato sauce?

Citric acid is a common ingredient in tomato sauce, as it helps to adjust the acidity and flavor of the sauce. The amount of citric acid used in tomato sauce can vary depending on the recipe and personal preference. However, a typical range is between 0.1% and 0.5% by weight of the sauce. For example, if you are making 1 kilogram (2.2 pounds) of tomato sauce, you would add 1 to 5 grams (0.04 to 0.18 ounces) of citric acid. It is important to start with a small amount and adjust to taste, as too much citric acid can make the sauce too sour.