The rule of thumb for planning a meal of mussels is 1 pound per person. That sounds like a lot but the volume is smaller than you'd imagine as well as the mussel is quite small compared to the shell. A large bowl brimming with mussels is probably less in quantity than a small chicken breast.
Serving this recipe with a bread for sopping up the broth is a must. It's a delicious broth that should be fully enjoyed as much as the mussels!
*Mussels from Prince Edward Island are incredibly clean thanks to the water there and do not require any preparation step other then externally rinsing them. Mussels from other areas may required debearding or additional cleaning to ensure no silt when cooking them. When purchasing mussels consult with your fishmonger on recommendations for additional cleaning before cooking.