The general rule for refreezing foods that have been thawed, is that you should only refreeze if there are still ice crystals present in it, or after it has been cooked. If you do refreeze, you should also reduce the amount of time before you use the food as well, since the partial thaw may have allowed spoilage to progress slightly.
No, it is not a good idea with any meat, especially seafood.
You can - but you shouldn't. Once food ~ particularly meat ~ has been thawed out, it should be cooked as soon as possible. Refreezing thawed food is always advised against by food suppliers. Once you cook it, you could freeze it then.
yes, don't know if it will taste good afterwards
Yes. Nobody serves raw crab.
Cooked.
Yes, the crab stick, as it is commonly known, is made from surimi, which is cured. Within the curing process this is all cooked.
They do not always come fully cooked. Sometimes they come fully alive, attached to the crab. The reason they are offered fully cooked is so that people who want to eat them don't have to cook them at home -- crab legs can be hard to cook if you don't have the right hardware.
No. But it will keep better if it is. This can kill any bacteria that may spread to other foods before the crab is cooked. If you are careful, either way works fine.
Steamed crabs should be consumed within a day. They might be OK after 2 days, but that's starting to push the limits.
it is not recommended to re- freeze any food product that has been partially defrosted due to the growth of harmful bacteria.
Crabs has protein. In every 100g of blue crab (canned, raw, or cooked), it has 18g protein. Highest protein number is with queen crab (cooked) with 24g protein per 100g.
Yes they will be cooked to some extent during the canning process.
Eel is typically smoked and cooked before being used in sushi. Salmon skin is usually cooked up as well. Crab usually means crab sticks, which are processed fish that is essentially cooked all the way through. Tomago, is a chicken egg omlette that is very good and completely cooked. And there are lots of vegetables that are used.