I cooked two turkey breasts sous vide. This year had access to the Meater+ thermometer probe which I managed to vacuum seal in the bag without difficulty (it is small). Since it works wirelessly I was able to monitor and it records the internal temperatures at the thickest part of the breast.
I thought the results were interesting. I cooked at 60C for 8 hours. I have always used https://www.chefsteps.com/activities/a-better-way-to-turkey-cook-that-bird-sous-vide-for-the-best-feast-ever which gives long cooking times at lower temperature. I have found that as according to this page https://www.seriouseats.com/recipes/2014/11/sous-vide-turkey-breast-crispy-skin-recipe-thanksgiving.html that 55C gives turkey which is just a little too pink for most tastes. Over the last few years have increased the temperature up to 59/60 and I find it perfect - very moist and tender, but pale not pink.
See attached images. I changed my mind a couple of times and started at 58 then 60 then 59 again, so ignore the slight variations. The thing I found interesting was that the thickest part (of a large breast) reached 55C in around 1 hour 40 mins and target of 59 in 2 hours 30 mins. Now I appreciate that sous vide is a combination of temperature and time or duration, but the data make me think that around 4 hours would be sufficient, as per the seriouseats table. I have previously used the chefsteps 55-58 for their much longer advised times, up to 12 hours and the meat is still quite pink at the end, so I dont believe 55 for 12 hours would effectively be the same.
From now on I will watching the internal temperatures with interest. This has always been the (relative) unkown for sous vide amateurs.
