Well, that’s the beauty of sous vide. The results are up to you. For a more traditional texture, maybe 180F for 8 hrs. For a meatier texture, not as flaky, try 140F for 48 hrs.
I ate some month-old duck confit after heating it to 190 F for an hour with my Anova, then browning it on the stove. It was delicious and I’m alive to tell the tale.
I’m truly puzzled by this. How have I confused anecdote and data?
Fact: anaerobic environments, like duck confit in fat, vacuum sealed in a bag, can lead to botulism toxin build-up if the duck was improperly preserved.
Fact: exposing botulism toxin to 85C or higher for at least 5 minutes will denature the toxin and make the food safe to eat.