Jean-Louis Tu <[log in to unmask]>:
>... butter has,
>as far as I know, no inconvenients (no lactose, no casein).

Tom:
It is my understanding that butter contains a small amount of milk solids,
so probably contains some lactose and/or casein (small amounts). Clarified
butter (ghee) has these removed, and yes, ghee is a heated product. (In
making ghee, the milk solids separate and go to the bottom of the pan.)

Jean-Louis Tu <[log in to unmask]>:
>I however wonder if it is really important that the fat comes from an animal
>source. What would happen if he ate avocado or nuts instead?

Tom:
In his book he does recommend eating avocados at times. I don't recall him
mentioning nuts. Your question is interesting; it would be harder for him
to eat nuts by the kilogram, compared to the raw meat he eats (as nuts are
a lot of work to chew thoroughly). As one who ate large amounts of avocados
in the past (when I was a fruitarian in Florida), I can say that they can,
in large amounts, clog your intestines, and slow down elimination. The
raw meat he eats is more concentrated than nuts or avos.

Thanks for your interesting comments and post!

Regards,
Tom Billings
[log in to unmask]