I deeply apologise for the lack of my response. For some reason I only received an email notification for Titch's first reply to my post. The same problem occured with a previous thread. Perhaps the site admin might investigate this (please send me an email if you do).
Thank you very much for everyboy's input, I think I am beginning to understand thanks to everyone.
captain wassname
when a piece of pork is immersed in a brine the whole system will eventually reach equilibrium.That is to say that the the brine and the meat will both contain the same percentage of salt (and nitrite/nitrate)
So a kilo of brine with 100 gms salt has 2 kg of meat immersed in it
left for long enough each kilo of the total will contain 1 third of the salt. that is 33gms per kilo or 3.3%
if we have 2kg of brine with 200 gms salt and the same 2 kg joint then at equilibrium each kilo will contain 50 gms salt (200 divided by 4)
In the first instance as we want 2.5 gms of cure#1 in each kilo we would need to add 7.5 gms cure#1 so 1 kilo of brine contains 7.5 gms cure#1
In the second case we would need to add 10 gms cure #1 to the 2 kg brine so only 5 gms cure#1 per kilo of brine.
The reason why 10% salt is because thats what the US authorities require.
I know the figures I have used are not exact (a 10% solution is 90=10 not 100+10) also no allowance for sugar.
But the point of Oddleys 2-1 brine is to ,as explained , minimise the salt while still covering the meat
Jim
Thinking in more detail about the chemistry and physics of it, as you pointed out, Cpn. Wassname, I now understand what you are saying ... (correct me if I am wrong) :
Because the volume of brine is small enough to significantly affect the percentages at the equilibrium of the system, the strength of the brine solution does become significant and importnat to the osmotic balance of the system (for want of a better expression).
This explains why Jogeephus is correct:
The volume doesn't matter as long as you have plenty of room and the meat isn't crowded. The 2:1 gives you a good idea how much brine to make to fully cover the meat so you don't make too much and waste money or too little and not have enough to cover the meat. A 70% brine is going to cure the meat weather you have a gallon or a million gallons. Its simply for planning. Least that's how it works for me.
But this explanation begs a further request from me:
Assuming that it is clinically safer to pickle a ham for too long rather than too short a time, it would make sense for a small commercial ham producer to have a barrel of brine with a number of small loin or shoulder hams curing at any one time in that barrel, what quantities of salt, sugar NaNO3 and/or NANO2 would make a good starting point for someone who wants to make up a curing system with 50 litres of brine being used to cure say upto 10 kgs of pork. I might even want to allow another, say 3 or 4 kgs of meat to be cured in the same bucket after I pull out out some of the first batch of hams.
Is there any advice on an answer to:
Would this system be safe and productive? If so then I would like to ask for the volumes of each constituent of a basic brine that would yield satisfactory results.
Using such a system would surely be safer (and therefore more liekely to tempt a first-timer to attempt to pickle a ham) because small errors when weighing the chemicals on the scales would be less significant to the overall brine composition.
So what would be a good basic 70% brine formula to place in a 50Kg barrel in which there are say 20 kg of meat being cured at one time?
I hope I am not being too presumptive to ask an additional question
I hope I'm not being too demanding