I noticed the brine recipes in Charcuterie for each are different. Anyone know why?
The recipes came from two sources.
The second one shown seems to me to be the better of the two (and your results in the pastrami tread looked great). With these types of immersion cure recipes there are two factors at play; the first is the ratio of the brine to the meat to amount of cure, and the second is the amount of time the meat is in the brine. To be successful, neither of these things can be changed. When I tracked the movement of salt into a piece of meat, I found that after 5 days the meat had adsorbed about 68 % of the salt it could take at equilibrium. If we assume (using the weights given) that the cure is adsorbed at the same rate and we calculate the amount of cure the meat would theoretically adsorb if it were to reach equilibrium, I come up with 155 ppm sodium nitrite for the second recipe. Brine curing "works" but only if the amounts and times are strictly followed. I find it easier and more flexible to make corned beef by injection curing.