I went to a vegan place here in Reno and got a faux pasta dish with the sauce on top. Since they serve raw food nothing is heated to more than 110 degrees. I didn't like the faux pasta dish in part because cold sauce tasted like leftovers. The coolness seems to emphasize the acidity and gave it an unappetizing texture.
My original thought is that Italians invented spaghetti sauce and they figured out it's best hot. But maybe there's Italian dishes that use a cold sauce.
What are people's thoughts about this?