There's no sensible reason for using animal fat when making money,
I suspect there's probably a very good and sensible reason. The Royal Mint are good at this. If they need tallow in there, it's because they need it.
Much the same as there is a move to stop plant cultivators using peat-based compost. Everyone agrees it's bad, but no one has yet managed to produce a compost that has the right water-retention and binding qualities the industry requires without mixing some peat in.
Biting the hand that feeds IT
