Bittermens Hellfire Habanero Shrub
It's one thing to infuse some liquor with peppers to add a little spice, but normally adding hot sauce to your drink is a surefire way to make sure it doesn't taste quite right. Which is why they make Bittermens Hellfire Habanero Shrub. Similar to bitters, this concentrated syrup is fortified with alcohol to better extract the flavors of the spices, and is perfect for adding a solid kick of heat to any cocktail. Just don't go overboard — normally just a couple of drops will do the trick.