For items:
Code:
$game_party.gain_item($data_items[x],y)
Where x is the item ID you want (there's a table somewhere in this thread) and y is the quantity you want of said item.
To prepare food you need:
10 points spent in Survival
Alchemy trait
There's floating notes and books around the worldspace. Some of them will have recipes. Not sure if they're needed if you know what you're doing.
Try this: meet those two requirements above, then get 2 Animal Meat and 1 Wooden Club.
Now plonk down your Cauldron and Open it then place those ingredients in.