The Volcano Sauce is a light red bottle with a light orange volcano on it that appears to be erupting. It is shown on a light yellow rectangle that also says "Volcano Sauce" with "Volcano" written in black and "Sauce" written in red. There is a black rectangle on the side saying "HOT!" written in yellow text.
The Volcano Sauce is used in a few different ways. For example, Sandy uses it to drip it on SpongeBob's tongue. In other cases, fish put it on their Krabby Patties or, in Sandy's case, she uses it as a beverage.
The Volcano Sauce first appeared in "Karate Choppers", it role was to use it to drip it on SpongeBob's tongue. The second appearance was in "Nasty Patty", it role was to poison Health Inspector Yellowtail. The third time was in "SquidBob TentaclePants", it didn't had any special role, it just appeared as a normal hot sauce.