Americans may love bellying up to the bar, especially on St. Patrick’s Day. But they’re often clueless when it comes to spelling the names of their favorite alcoholic beverages.

That’s the word from Bartrendr, an app that lets users share information about their favorite watering holes. The app’s technical team tracked some 100,000 recent postings and found a plethora of misspellings, even with names that would be seemingly easy to get right.