[/spoiler]fresh water, hot rock, one sweet herb, one soapy herb, one spicy herb, food bin, berries, fish, hard fruit, mushroom, and lastly food bin. once the herbs and first food bin is added the others can be done in any order with a food bin last. [spoiler]

that the food went last.

(It's in the Guide)
Boil your fresh water.
Put in one of each herb.
Tell a villager to cook by putting them on pot.
When they say "Unfinished", take them to berries (not to food bin). They will take berries and it will say "adding to stew".
Again put cook on pot, when it says "unfinished" take cook to knock down a fruit. That will get added.
And similarly get a fish.

I've added everything else, and tons of food bin food, after mushrooms have been added in there. The kids just pick the mushrooms and take them to the bin.

Except for the food from the bin, the others will not be add twice. Try it with blackberries or crab or fishes... they'll be also put in the food bin.