by Meagan
The flesh of a dead crab spoils very quickly. This means that crabs are almost unique among the animals we commonly eat, in that they must be cooked so fresh that the task of killing them comes right into the kitchen. Indeed in our world of plastic-wrapped meat most of us are disconnected from the reality of killing the animals we eat. And facing this task can be quite confronting.
There are many different ways to kill a crab. Some of the most widely used methods are forms of torture.
This page is written for those whose personal food ethics permit them to eat crab but who would prefer not to inflict unnecessary suffering. It will show you the most humane way to kill a crab – a method which is not only endorsed by animal welfare agencies but preferred by most restaurants because it results in a tastier end product!
Many assume that crustaceans, as invertebrates, are incapable of feeling pain. Yet anyone who has ever seen live crabs dropped into boiling water knows that the reaction can be quite violent. They move around vigorously as if trying it escape and “squeal” as if begging to be freed.
We know that the “squealing” is actually the result of air escaping from their shells (crustaceans don’t have vocal chords). And, based on the relative simplicity of the crustacean nervous system, the physical reaction was often assumed to be merely a reflex response with no feelings of pain attached.
The weight of scientific evidence now seems to suggest otherwise. Studies at the University of Belfast on pain in prawns and crabs have provided further evidence that crustaceans do in fact feel and respond to pain. Whatsmore, it seems that they remember pain – not only reacting instantly to it but later going to lengths to avoid the causes of past pain.
Personally I would rather err on the side of caution. It takes no extra effort on my part to use a humane method. And besides it’s the method used by restaurants because it tastes better!
I will never forget the first time I cooked a live crab. I’d risen bright and early to visit Billingsgate Market where I had bought up big having made promises of a seafood feast for my friends that evening. I rode the tube home with three crabs rustling about in a plastic bag by my side.
I hadn’t thought much about the fact that they were alive and would need to be killed. I’d always heard you ought drop them live into a pot of boiling water so assumed that’s what I would do. Then my vegetarian friend informed me that this was the most inhumane method. The right way to kill a crab was to simply put them in the freezer and allow them to get a little cold before entering a deep sleep from whence they die. I saw no reason for cruelty so in the freezer it was.
An hour or two later I removed them from the freezer and left them on the bench. You can guess what happens, right? Within about 30 minutes I heard the rustling of plastic and realised the poor little tackers were still alive and kicking (literally)! I sent them back into their icy den.
Five hours seemed enough time and I was eager to get this dish cooking. For whatever reason I decided to start by removing the legs. I was half way through the second crab when I detected movement in one of the last remaining legs – and my heart stopped! I looked at the other crab – and saw beady black eyes looking up at me from a helplessly legless body. What had I done?! Clearly the freezer trick was only the first step in a process. My misguided attempts to treat these crabs humanely had left me unwittingly inflicting torture!
Although I took pleasure in slurping the delicious flavours of Singapore Chilli Crab from those poor crabs’ legs later that evening, I was left somewhat traumatised by this experience (yes, clearly less so than the crab!)
I learned an important cookery lesson that day – never buy live animals unless you are ready to kill them for your meal!
Probably the most common approach to killing crab is to simply drop it into a pot of boiling water. If crabs do indeed feel pain then this seems a particularly nasty approach. Further, many chefs avoid this method because some crabs self-amputate their legs and claws in response to the trauma and because it tends to result in tougher crab meat. (If you were dropped into a pot of boiling water I daresay you would tense up your muscles too!)
 Meagan |
Other common yet inhumane approaches include the leaving crabs in freshwater to drown, which can be a particularly slow process, and simply cutting up or removing flesh from the live animal, a self-evidently cruel method.
The very important first step is to place the crab in the freezer for 1-2 hours. This will desensitise the crab so that it feels no pain in the following procedure.
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When you are sure the crab is desensitised you need to identify the crab’s nerve centres. Turn the crab onto its back. At the front you will find a shallow depression near to the crab's mouth (but on the underside). This is the front nerve centre. Lift the tail flap and you will see a tender area or even a small hole in the shell. This is the hind nerve centre. Pierce the hind nerve centre with a knife until you feel it hit the shell on the other side. Then quickly revert to the front nerve centre and do the same.
Remove the crab from the freezer and check for any signs of consciousness.
Begin by turning the crab over and tapping on the shell while checking for any eye reactions. Then touch the crab around the mouth parts while checking for any reactions or movement in this area.
If you see any reaction at all, or if you feel any resistance as you are handling the crab then place the crab back in the freezer for another 30-60 minutes.
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Comments
very interesting post .thanks for share
Oh my goodness, I was cringing as I read this and may never try to "kill" a crap again. Although, I have to admit I have had to expire well over 500 in my cheffing days. I researched this as well to find the best way to humanely and your procedure is spot on. However, when you have about 50 or so to do the deed, I found the quickest way was to basically knock a rolling pin over that area; then rip the legs from the body and only cook the legs. I know, I know, it sounds so horrible, but this was quick and I never saw the crap twitch or move after I did it. Great article!
amazing page.. a complete eye-opener..
i think choosing the most considerate method for turning a living animal into a food product is important. and keeping this as the top reasons, we can also think secondarily about the meat losing its quality with the boiling water method.
[and by the way, your page made me read in detail about crabs - crustaceans - arthropods - exoskeletons - fossils and finally pangaea; can you believe it!?]
I like to remove the crabs eyes while it is alive and then pull the legs off one by one until it's just a pile of shells, then I drop it in the boiling water to finish it off. I guess I am a crab genitorturer.
RainDefence I did wonder if I should put a rating or warning of graphic content at the top of the page!
And to those of you who don't think you could kill one, I do understand. I confess that I felt more than a little discomfort about publishing an article entitled "How to kill...". I don't think it feels entirely comfortable to kill a living being of any kind (oh except mosquitoes, I do that without even thinking!)
Thank you for your comments.
Great question Sam! Many crabs actually die in the freezer - but not all and as far as I know there is no way to tell whether they are dead or just comatosed so you always need to follow through with the next step. Presumably they would die very quickly after being thrown into boiling water. The RSPCA and other humane societies state that rapid destruction of the nerve centres is the only humane method apart from electro-stunning (which requires a specialised machine). I can only assume that this method is more instant than boiling water - though the time difference may be negligible.
I am wondering, would it work to first put the crab in the freezer for several hours (six or more) and then drop it directly into boiling water? Would save the operation and I guess / assume that they are cooked before they come to their senses again? Or am I wrong?
Crabs are tasty nuff said!
I rather would not kill the creature. But excellent article.
Wow, that description of the crab looking up at you after you had ripped its legs off made my stomach lurch a bit! I must be getting soft. I am glad that you still ate and enjoyed them though.
I must admit I am not a bit fan of my food wriggling and moving around too much, I can handle killing mussels, but they don't have eyes so don't make you feel too guilty! I do love eating crab and lobster though. Thanks for the article.