>But *if* paleo-cooking happened, it can only have been in very limited ways
>1. over an open fire (which implies loss of the fat which is feared,
right?)
>2. in a skin with heated stones
>- and only after the year 400,000bc or so (according to current findings)

there is also pit cooking . That is a slow process ( hours ,) food are
burried with soil in a pit  between a sandwich of green grass or leaves over
a bed of  heated stones. ( because of the work involved ,it might  have been
done only for festivity when  you can cook efficiently in big quantities
with this method) it is kind of steamed as a result

jean-claude