Vinegar acts as a preservative because there are not that many microorganisms that can live in it. It's a waste product of certain kinds of bacteria, but even they have problems once the concentration gets high enough... it's sort of like humans trying to live in a sewage pond.
preservative
The difference between ketchup and tomato sauce is that tomato sauce is only one ingredient in ketchup. Ketchup also has sugar, vinegar, and spices. That is the difference bye
vinegar fruit juices lemonade cola pickles tomato ketchup
I assume you mean "ketchup which is 100% tomato", since all ketchup is 100% ketchup. The equivalent of 100% tomato ketchup would be passata (sieved tomatoes), or tinned tomatoes, or even tomato puree. (Regular ketchup also contains vinegar, sugar and spices to make it taste like ketchup).
Ketchup is spiced tomato sauce cooked with vinegar. Tomato sauce is the sauce made by cooking tomatoes down until the meat of the tomato breaks down into a sauce consistency. Ketchup is spiced tomato sauce cooked with vinegar. Tomato sauce is the sauce made by cooking tomatoes down until the meat of the tomato breaks down into a sauce consistency.
There are references to acid in Ketchup, Formic acid and Acetic acid (vinegar) The acidity of Ketchup is between 3.89 and 3.92, but it is not harmful.
Tomato sauce is cooked to allow the liquid in the tomatoes to reduce which creates the sauce or paste. Tomato ketchup is cooked tomatoes with added ingredients such as vinegar, sugar, salt, and other spices.
No
Use Tomato Ketchup
Yes, if you are making the sauce yourself you could use tomato puree instead of tomato ketchup in the recipe or if you want to be really lazy, just use curry ketchup.
INGREDIENTS: HEINZ® TOMATO KETCHUP (TOMATO CONCENTRATE FROM RED RIPE TOMATOES, DISTILLED VINEGAR, HIGH FRUCTOSE CORN SYRUP, CORN SYRUP, SALT, SPICE,
"C'mon, Ketchup."
Wendy's the restaurant uses "Heinz Tomato Ketchup"