The one thing that I have found is that no two batches of tallow are created equal when I buy it from stores. It varies in color, texture and smell. I've also found that it can greatly change the quality of the soaps I make. This is very disturbing b/c I find it to be one of the best oils for various soaps. It got so bad that I decided to try to make my own to see if I could get a consistent quality.
Well, I was getting about 20-50lbs of fat trimmings from a butcher every week and went through many different processing procedures to see how these may effect the final product.
For the most part there was very little meat left on the trimmings. Most of the meats were cuts of prime rib or fillet so it had very nice fat.
If I meticulously trimmed every sliver of meat off (took hours for like 10 lbs of fat) then I would put it in the oven at 250-300 and i would get golden liquid that turned snow white when cooled.
If I trimmed 90% of the remaining meat off and did the same, the fat had a reddish tint (maybe blood/burnt blood?) and the solidified fat was a yellow/tan color.
If I didn't trim any of it then the liquid was brownish and when cooled it was a solid tan to very light brown, with slight yellow tint.
BTY, all of this was filtered through a coffee filter and then a special cotton filter I made from square cotton swabs lined up in a row then rolled up (VERY TIGHTLY) into a cylinder shape so it was a solid cylinder of rolled cotton 1.5" high and about .8-1" diameter and this would be put in the bottom of the funnel and plug it up and then the hot oil was put in the filter and passed through the cotton filter. I would guess it removes everything to almost the micron level, so it removed any burnt meat or blood.
Now since I did this for all three methods (and a few other methods I didn't mention) and I got different results, I can't explain the difference. I even tried passing the oils through a .44 micron polypropylene filter (about 50ml of each, each with own new filter) and the colors remained the same).
All the fats were from the same butcher, from the same cuts of beef so I am at a loss.
I can say that my first try with tallow was the best and it was the fat from the kidney and liver - called K&L fat). The fat was TOTALLY different in texture - it wasn't solid pieces like that one the meat. I can say that this is the best tallow by far.
Does anyone have a consistent way to render or a good source that doesn't charge like $15/lb!?
Well, I was getting about 20-50lbs of fat trimmings from a butcher every week and went through many different processing procedures to see how these may effect the final product.
For the most part there was very little meat left on the trimmings. Most of the meats were cuts of prime rib or fillet so it had very nice fat.
If I meticulously trimmed every sliver of meat off (took hours for like 10 lbs of fat) then I would put it in the oven at 250-300 and i would get golden liquid that turned snow white when cooled.
If I trimmed 90% of the remaining meat off and did the same, the fat had a reddish tint (maybe blood/burnt blood?) and the solidified fat was a yellow/tan color.
If I didn't trim any of it then the liquid was brownish and when cooled it was a solid tan to very light brown, with slight yellow tint.
BTY, all of this was filtered through a coffee filter and then a special cotton filter I made from square cotton swabs lined up in a row then rolled up (VERY TIGHTLY) into a cylinder shape so it was a solid cylinder of rolled cotton 1.5" high and about .8-1" diameter and this would be put in the bottom of the funnel and plug it up and then the hot oil was put in the filter and passed through the cotton filter. I would guess it removes everything to almost the micron level, so it removed any burnt meat or blood.
Now since I did this for all three methods (and a few other methods I didn't mention) and I got different results, I can't explain the difference. I even tried passing the oils through a .44 micron polypropylene filter (about 50ml of each, each with own new filter) and the colors remained the same).
All the fats were from the same butcher, from the same cuts of beef so I am at a loss.
I can say that my first try with tallow was the best and it was the fat from the kidney and liver - called K&L fat). The fat was TOTALLY different in texture - it wasn't solid pieces like that one the meat. I can say that this is the best tallow by far.
Does anyone have a consistent way to render or a good source that doesn't charge like $15/lb!?