It stops it from cooling down too quickly and holding the food at a dangerous temperature. I pour boiling water into mine about 5 minutes before I use it. Keeping the meat hotter also allows it to continue to break down the collagen further leading to a better end product.
Oh, that was still hot enough I was struggling to touch it. With the amount of moisture surrounding it it held temp quite well - still hot to eat after 2 hours.
Why wrap it in foil for the rest? You leave leave it in the butcher paper and put it in a preheated chilly bin (cooler) with some towels.
Honestly, its the way we always did it - never heard of preheating a chilly bin.
It stops it from cooling down too quickly and holding the food at a dangerous temperature. I pour boiling water into mine about 5 minutes before I use it. Keeping the meat hotter also allows it to continue to break down the collagen further leading to a better end product.
Oh, that was still hot enough I was struggling to touch it. With the amount of moisture surrounding it it held temp quite well - still hot to eat after 2 hours.