When someone first preached to me the benefits of sous vide cooking, it was said that this method of cooking is foolproof. One can cook something at low temperature for a long time - hours, in fact, without overcooking. I distinctly remember being told that I could chuck a piece of meat in the water bath before heading out to work in the morning, and come home to tender and juicy meat.
I can definitely say that this is not the case.
Not wanting to have a really late dinner, I went home during lunch to begin the cooking process for a couple of pieces of steak. I had read in Thomas Keller's Under Pressure that the cooking time for steak was 45 minutes, but at the same time I had previously consulted a sous vide website and learned that one should pasteurize beef for about 2 hours. Then I looked at some other website and was informed that one can cook beef for a long time, as long as it's not excessive like 10 or 12 hours.
So I vacuum packed my filet mignon and beef shank, dunked it in my SousVide Supreme at 55°C, and left them cooking for the next 5 1/2 hours…
When I got home after work and opened up the lid to the tank, my heart sank immediately. Even without opening the bags and cutting open the beef, I could see that I've overcooked my steak…
Once I had seared the meat in a hot pan for a couple of minutes and then cut open the two pieces of beef, my fears were confirmed. While the color was still pink on the inside, it was visibly drier than the medium-rare that I was trying to achieve. Texture-wise it was probably closer to medium.
Now clearly 5 1/2 hours is too long to cook a piece of steak, even at 55°C. The conclusion of my subsequent discussions with Legolas Jr. - who is one of the Sous Vide Monsters originally responsible for telling me it's "foolproof" - is that the problem lies partly in the beef. Since the meat had been previously frozen - it's Aussie - the cell walls had been damaged somewhat. With prolonged cooking, the blood and juices had seeped through the damaged cell membranes and leaked out, thereby making the meat less juicy. Technically the meat was not overcooked and still medium-rare, but simply lacked the juiciness and the brighter red of a true medium-rare steak.
I was wondering where you would get vacuum sealed bags in Taiwan?
ReplyDeleteHope you had better luck. My favorite thing is chuck roast. I'll cook a ~3 lb chuck roast at 132F for 3 days, it's amazing.
ReplyDeleteFor better/leaner cuts like filet, you don't want to leave the meat in much past the point when it reaches your desired temp. You want it to touch the temp and take it out ideally.
For fattier/tougher cuts like chuck, you want to hit the temp and leave it there for a long time.
I agree with Mike Harris. I learned the same lesson with leaner cuts; the longer cooking times definitely dry them out and make them "grainy". My beef tenderloin looked exactly like yours.
ReplyDeleteOnce you have reached your desired cooking temperature internally, the only benefit a longer cooking time would achieve would be to break down collagen (connective tissue) in the meat. That is why it shines for cuts like Chuck. Since Filet Mignon is already very tender the only thing you're doing is turning it into paste.