math check

[lionprincess00]

Sooo, I've received so much fat from my butcher since giving them new years soaps, I'm in fat heaven (to go with those extra 3 holiday lbs :???.

I was rendering, and noticed the texture seems off, as in its softer than usual.
Oh, not to mention the scent is meatier after my second render once cold in the refrigerator...Yet the first render smelled half what it normally does. It normally smells so bad a sensitive person could gag lol, no really, but this time it didn't do that.

I'm suspecting I was given a mixture of pork and beef.
I also thought while trimming meat pieces off, a small few looked unlike cow, for lack a better term.

If it's the case, and I'm using sap values for tallow in this addition, and I have pork in there, that could be a big mistake! I'm going to ask, but for these renders I haven't used yet, I don't want to waste it.

So I went to soapcalc and did a mock 1 lb tallow 5% SF vs 1 lb lard 5% SF.
results
Tallow 1 lb 5% SF 2.17 oz lye
Lard 1 lb 5% sf 2.15 oz lye
Lard 1 lb 4% sf 2.17 oz lye


So my question and I want a confirmation, if I use the tallow values because I'm certain there's tallow and uncertain if some is lard, then so long as I use a 1+% superfat, it'll be ok seeing as the 5% tallow is to 4% lard??

I'm so curious now. I'll ask on Friday when I go to get my steaks for Friday evening. When the ole hubby and big kids went, the sweet meat dept gave me 3 more packages atop the 3 I'm currently rendering as I type!!! I had to freeze it immediately before it went bad, because It doesn't keep in natural form for long, and I can't get to it anytime this week and maybe not next week.
Ramble, sorry lol.


Thx for your help!

 

[dosco]

So I went to soapcalc and did a mock 1 lb tallow 5% SF vs 1 lb lard 5% SF.
results
Tallow 1 lb 5% SF 2.17 oz lye
Lard 1 lb 5% sf 2.15 oz lye
Lard 1 lb 4% sf 2.17 oz lye

Does your scale resolve to 0.01 oz? Mine does not, it resolves to 0.05 oz.

I suppose if you switch to grams it might be interesting ...

2.15oz = 60.95g
2.17oz = 61.52g

delta = 0.57g

Now, my scale will resolve to 0.5g, so it would be theoretically possible to distinguish between 61g and 61.5g, but whose to say that when I weigh out 61.0g that it isn't really 61.25g and it just hasn't triggered the scale to round up to 61.5?

I think in the end it's lost in the noise - don't worry about it.

Cheers-
Dave