Mussels are cultivated on suspended ropes, which ensures they don’t touch the 
seabed and pick up grit and barnacles. Their bluish-black shells are thinner as they 
are grown in sheltered waters so the shells don't  need to endure stormy seas.   
Mussels grown on the seabed have thicker shells.
The meat content rope grown mussels is higher as they are not exposed at low 
tides and so constantly feed. Rope grown Mussels are available year round 
although not at their best in the summer months. Dredged Mussels can be much 
cheaper, but need more cleaning to remove the sand and grit. Dredging runs from 
August through to May. The myth of only eating Mussels when there is an ‘R’ in the 
month is incorrect. 
Mussels spawn in spring, and are not at their best as their meat content is lower, 
but there is no risk in eating. Mussels make a fine starter, lunch or main course. 
Ensure the Mussels are clean and free of barnacles; remove any ‘beard’ (also 
known as ‘byssus thread’, and is what attached the Mussel to the rope or rock it 
grew on), and simply steam in the serving sauce or over abed of seaweed. Discard 
any that do not open after cooking, or which stayed open before cooking. 
There are classic recipes such as moules marinières and moulesprovençale, and 
you can’t imagine paella without them. Frozen Mussels are good quality, and 
include New Zealand Greenlip Mussels, which have a different taste and are much 
bigger, making them great for topping and grilling.