TLDR: Assim como a carne de porco, o bife cozido por um longo período de tempo começa a ralar e ficar mole. Não é o que a maioria chamaria de bife tradicional, mas se você tem a mente aberta, pessoas como carne de porco desfiada e costeletas de porco ...
Fotografias:
Serious Eats tem guias sous vide muito completos em ambos bife e frango.
Aqui está o que eles têm momento do bife:
To figure out exactly what happens when you cook steak sous vide for
extended periods, I cooked identical steaks at 130°F (54°C) for
periods ranging from one hour all the way up to 48 hours. I found that
the most important differences typically occurred between the four-
and 24-hour marks.
Take a look at these slices of steak I've cut off and torn:
As you can see, the steak cooked for just one hour stretches and pulls
when you tear it. This gives the steak a pleasant amount of chew. It's
still tender, but it tastes like a steak. By the time we hit four
hours, that chew has been reduced a bit. Connective tissue has broken
down, and individual muscle fibrils split apart easily instead of
sticking together, though a four-hour steak is still pretty decent.
Head all the way over to the 24-hour mark or beyond, and your steak
ends up nearly shredding as you pull it apart. It's a strange
mouthfeel: The steak is still plenty juicy (a steak cooked 24 hours
loses barely any more moisture than a steak cooked for one hour), but
the meat shreds instead of offering resistance or chew.