dinny_g wrote: Sat Nov 30, 2019 7:55 pm
@Nef - why should I try to draw moisture out of the meat before cooking?? Serious question. I know you know what you’re talking about...
Getting technical about it, the thing that makes meat taste meaty is the maillard reaction - it's a sequential process of sugars and amnio acids reacting at the point of heat contact.
Drying the surface of the meat helps encourage the caremalisation of sugars, aiding key steps in this process. Or to put it another way, if the meat surface is wet, you're effectively boiling the sugars, which stops the caramelisation and prevents the maillard reaction from happening. Ever noticed how a cheap supermarket chicken breast never forms a golden brown crust - it just goes white/grey, then burns? That's the excess water. You can denature the protiens (strictly speaking "cooking"), but you're not developing any new flavours.
On the tenderising thing, I think the theory is that by salting the surface, you create an osmotic gradient throughout the piece of meat - water moves across semi-permiable membranes to try and equalise the salinity (I.e. water moves from low concentrations to high concentrations). The water movement helps ensure a more even distribution of water throughout the piece of meat, aids the breakdown of the tougher cell wall structures during the cooking process, and brings protein-rich liquids closer to the surface (again helping the maillard reaction). The absorbsion of some salt into the meat also helps with individual cells ability to retain moisture during cooking, which helps give a softer texture in the final product.