For any type of pemmican your best bet is beef suet.  Pork fat
doesn't get as hard - it's always a gell at room temperature.  Remember
that beef is a nutritionally superior food, and while exotic pemmicans
will be good as a snack, they're not reccomended as a sole source of food.
        As for how much food to give your kid, you're on your own.
Conventional wisdom says that kids should eat less then adults because of
their smaller BMI, but NeanderThin has never been much on conventional
wisdom.