Browar Nepomucen's Be Careful is a sour ale from Poland, brewed to 6.7% ABV with a sharp, balanced character. The brewery, founded by brothers Piotr and Mateusz Musielak in a restored 100-year-old bakery in Szkaradowo, has earned recognition for its diverse range of styles—from lagers and non-alcoholic beers to experimental hop-forward ales.

Be Careful combines the tart edge of a sour ale with restrained bitterness, reflecting Nepomucen's craft approach to flavour balance. The name hints at a beer that commands respect, likely owing to its sharp acidity and alcohol content.