witch cook people questions

[Blackstorm]

I can't find any answer to that, so I hope someone can help me:

Quote:

Using this hex creates one meal or serving of food of the witch’s choice, typically a delicious stew or a dough suitable for cookies, pastries, or other desserts. Cooking the victim takes 1 hour. Eating the food provides one of the following benefits for 1 hour: age resistance, bear’s endurance, bull’s strength, cat’s grace, eagle’s splendor, fox’s cunning, neutralize poison (instantaneous), owl’s wisdom, remove disease (instantaneous)

So, the questions are:

1) how long the people I cook lasts as food? It take 1 hour to cook one person, but how much it last before it's no more edible?
2) how much portions I get from a humanoid, either small and medium?
3) does the benefit need to be the same for everyone who eat the same humanoid, or can one choose when he eat the grocery?

Thanks in advance for any help.

[Emperor Worm]

1. If you see my children growing out of your meat, it has probably spoiled.

2. Same as the amounts you get in real life. If you are unsure, practice on appropriate subjects and you'll know.

3. The one who feeds, he may chews what he needs.

[Starglim]

1. Much like other cooked meat and baked goods, it might keep for a few days, more with cold or magic, or the witch might be able to make preserved foods or trail rations that last indefinitely but don't look quite as delicious.

2. One meal or serving. If you want more, cook more people.

3. Each serving can have a different effect, most likely at the witch's option when created.

[Blackstorm]

So, to recap: one humanoid can give one single meal to the entire group, and the "food" last a as long as normal food. In addition every meal I cook will give the same buff for everyone. Is this correct?
Can someone point me to some indication on rules or similar about food preservation times?