Do not be falsely economical in trying to do deep frying with these fats.
Use ⅔ lard and ⅓ suet for deep frying; it is cheaper and more wholesome than to use all lard.
For all deep frying use two-thirds lard and one-third suet, as suet is considered to be more wholesome and cheaper than lard.
For deep frying Mary was taught to use lard and kidney suet combined.
So that if ...