Rolling Rock is a pale lager introduced in 1939.
The number 33 is printed in all bottles of Rolling Rock.
Is it some kind of secret code? No.
Here are some of the most popular ideas:
33 degrees is the temperature at which Rolling Rock is brewed. It’s also the temerature at which it should be served.
It’s in the bottle
If you add the letters in Rolling Rock’s ingredients… It equals 33.
Brewer’s Yeast (12)
Prohibition ended in December 1933. Rolling Rock wasn’t produced until 1939, the owners wanted to celebrate the 21st amendment that allowed them to make beer.