Friday, February 15, 2013

Optimal Conditions of Cooler Aging for Beef

i found a beautifully marbled rib eye two days ago and put it in my steak aging fridge.

i threw in about a pound of salt to control the humidity.  recommended humidity is about 80%.

the fridge is still set to 1 C, but i'm considering raising it.  i was at whole foods yesterday and discovered that they have a dry aging fridge also!

i talked to one of the butchers about it for a while and they keep the fridge set at 41 F.

i did a bit more research on aging temperatures and came across this awesome paper.  as demibiologist, it's just what i needed.

it compares dry aging at 30 F vs 38 F, with resulting tenderness measured in shear force with protein degradation confirmed through gel electrophoresis.

the results were fairly surprising.  enzymatic activity decreases significantly below 0 C and ceases below -2 C, yet at 30 F (-1.111 C), both samples reached a similar shear force/tenderness.

i'm considering raising the fridge a degree or two, but also might lean towards cooler in case i have any random pernicious bacteria floating around the fridge.

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