Distilled spirits come in varying degrees of strength, oftentimes hovering around the 40% alcohol by volume (ABV) mark. But that doesn't necessarily mean they're limited there, because ABV per spirit can vary widely from the low end, 20% to 25%, to cask-strength whiskeys, which can hang out between 50% to 60% ABV. Learning about the spirit world (beverages, not ghosts!) can be fascinating, because as you can imagine, drinks can get way more intense than that.
If an alcoholic beverage can reach 60% alcohol levels, then how strong do you suppose the strongest liquor in the world is, and what on Earth can it be? Though I can hear a lot of you shouting the name right now, it's the American product Everclear, which clocks in at an alarmingly strong 95% alcohol. Notably, the brand Everclear itself doesn't suggest you drink its product straight, but rather use it for other purposes, such as cooking, cleaning (yep, it disinfects), and creating tinctures and fortifications for bar purposes. But there is in fact a stronger product out there called Spirytus Rektyfikowany by Polmos Warszawa, from Poland, otherwise known as a "rectified spirit," which, incredibly, inches past 95% to come out on top.
Just how strong is Polmos Warszawa Spirytus Rektyfikowany, anyway? If you think an alcoholic product can't get much stronger than Everclear's 95% ABV, you're right, because Polmos Warszawa's Spirytus Rektyfikowany ekes past that by a single percent. Like Everclear, you're technically not advis.