A crimson powder, consumed by snorting it. It is a highly controlled substance that is illegal to produce and consume throughout the archipelago. It is made from the dried juices of the Sanguine Milkcap mushroom.
When you consume it, you make a DC 15 Constitution saving throw. On a failure, you fall unconscious for 1 minute (another creature can use its action to shake you awake). On a success, you instantly gain the benefits of a short rest.
At the end of your next long rest, you gain one level of Exhaustion. If you are already suffering from Exhaustion when you consume fizzle, you have advantage on Constitution saving throw from consuming it, and your Exhaustion levels are suppressed until you finish your next long rest.