The warm hot fudge sauce is thick, dense, and not runny or thin. If it sets up too thick for your liking after it's cooled, add a drizzle more corn syrup and stir to thin it out. I'd rather have my hot fudge thick enough that when I turn it upside down on a spoon, it hangs on. Also keep in mind that when you reheat it for future uses, it naturally thins from the heat.