1. Mussels Taste Different in Summer
During warmer months, mussels enter their spawning season. This biological process can make their meat:
Softer
More watery
Less flavorful
So even if they weren’t dangerous, they simply didn’t taste as good.
2. Warm Water Means Higher Toxin Risk
Summer heat can trigger algal blooms (including red tides). Mussels are filter feeders, meaning they filter large amounts of water — and along with it, microscopic algae.
Some algae produce marine biotoxins, and these toxins:
Can build up inside mussels
Are not destroyed by cooking
Can cause serious illness
Without modern monitoring, avoiding shellfish during hot months was a practical safety rule.
