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Is it safe to cook a steak that was left out (raw) for 7 hours?

I left out 2 separate packages of unopened raw beef roasts overnight. They were frozen solid when left on the counter but unfortunately I only found them there 16 hours later. Can I now safely cook them for dinner?

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marked as duplicate by Aaronut Oct 21 '11 at 16:51

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2 Answers 2

No, you can not safely eat it. See answers to "Can I safely cook a steak that was left out raw for 7 hours".

Thawing at room temperature in air allows the surface to reach and maintain an unsafe temperature for some time, even as the interior remains quite frozen.

The appropriate ways to thaw the roasts are to do it in the fridge, or fully immersed in a bowl of COLD water with a trickle of cold water running over it. Thawing in water is the faster approach, and often takes under 30 minutes. It is safe to use this method for thawing requiring for up to 2 hours, but if considerable preparation is required, an hour is a better rule of thumb.

These are the approaches endorsed by cooking schools and health boards.

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but if they are not left out, how do they thaw? –  Doug Jul 15 '11 at 6:07
    
I've edited in an explanation. –  BobMcGee Jul 15 '11 at 6:15
    
There's an article by McGee that says meat can also be thawed in warm water. nytimes.com/2011/06/08/dining/… (Bob's answer is correct, of course). –  BaffledCook Jul 15 '11 at 6:59
    
+1 for good food safety. Thaw your meat in the fridge, or use fresh cuts instead. Several hours of room temperature meat of any sort could result in severe illness. –  Bruce Alderson Jul 15 '11 at 7:36
    
BobMcGee I think different states allow for different times of defrosting. I am looking at some documentation that says the water method is feasible for up to a 2hr defrost time. Anyway, if it isn't a portioned piece of meet, for example a roast. Defrost in the refrigerator. It will take longer but why risk it. –  jeffwllms Jul 15 '11 at 15:58

It's almost impossible for the answer here to be "yes", because the penalty for failure is fairly high. The "safe" answer of course is just "no" - since it can never be proved wrong. On the other hand, leaving meat out of the fridge (or freezer) to defrost is, I would suggest, a fairly common behaviour.

As with many things though, some common sense does apply. There are a number of factors to consider - and then at the end of the day, it's up to you.

a) the source of the meat. You may live in a country where all the meat comes in small polystyrene trays wrapped in cling-film. Where it's been immaculately handled from slaughter to supermarket. On the other hand many (dare I say most?) people buy meat that's been slaughtered right there in the market, and left all day under a hot sun, and endless flies. Quite surprisingly, they haven't all died. The former I'm somewhat more casual about than the latter.

b) the cooking method - "solid" beef, ie not ground beef, develops bacteria on the outside, not the inside. So I'd definitely give the outside of the meat a good searing to be sure. Or, if you like, slightly trim the outside of the meat first, then sear it.

c) slightly aside - the meat type. Beef (and lamb) are pretty resistant to spoilage - things like chicken and pork less so. Also chicken and pork can develop nasties "inside" the meat - one reason those meats are never served raw (or rare). Shellfish is also dangerous if it has spoiled.

d) the temperature of the room it was sitting in. If it's 110 in the shade outside, and like 90 in your kitchen, then 16 hours is a long time. In winter though I can leave a joint out overnight in the kitchen and it's still partially frozen in the morning. Clearly the temperature will affect the amount of time I'd leave it out for.

e) any obvious sign of spoilage? With beef (given that it doesn't really show) any unpleasant odor or color is probably not good.

At the end of the day it is your decision.

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It is the OP's decision to serve it or not. Serving it safely is another matter. Your points are valid considerations, but they change serving it from "reckless" to "risky", not to "safe". –  rumtscho Jul 15 '11 at 9:46
    
All good points. I would also add: who's going to eat it? A healthy young person is less of an issue than an elderly person, pregnant woman, young child, or otherwise immuno-compromised individual. –  Vicky Jul 15 '11 at 15:09
    
I think you're missing the point. This isn't a matter of an extra hour or two, this is 2/3 of a DAY AT ROOM TEMPERATURE. With that amount of time, I would expect the meat to start smelling if it wasn't extremely fresh. –  BobMcGee Jul 16 '11 at 4:35

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