If you ask any grandma when to eat mussels, the answer will be clear: only in months without an “R”

Many extend this rule to all shellfish—but is it really true? In part, yes. Let’s take a closer look to see whether this tradition is based on science or if it’s just an old myth.

Why Mussels Shouldn’t Be Eaten in Months with an “R”

This belief is widespread in coastal regions of Italy, though it often causes confusion. A quick online search reveals conflicting opinions. Even within popular tradition, there are different versions of the rule.

So, is it true that mussels should only be eaten in months without an “R”? The answer is yes. Mussels reach peak quality during the summer months—May through August—which are the months without an “R” in their names (in Italian).