Crayfish!!!!!
Yes you can eat crayfish,but first you need a licence to collect them.
You need to trap a few to make a good meal.Now you have your catch at home still alive,put them into a large tank,bucket or bin with fresh clean water for 48hrs, this will purge them and they wont taste muddy.
Now to dispatch them you can put them in the freezer for a few hours or
if like me take a large pot of boiling salted water and tip them in!!!!
Bring back to the boil and cook for about 10mins,then run them under cold
runing water till cold.
(They will have changed colour to an orangey/red)
Now break the tail off and chuck the rest in the bin.Peel the shell off the
tails then on the underside of the tail meat you will see a black vane take
that out.You can now use the meat as you would use cooked Prawns,Lobster etc.
Hope this helps?