After the pulled chicken meat...you will be left with chicken bones.
Don't just discard them to the trash bin!
Good chicken stock from scratch and no artificial seasonings may be had from those bones and wish bones :)
Slow boil those bones with onions, vegetables and you will have the tastiest chicken stock from scratch. You may freeze them and sell as chicken stock. Most cooks will prefer buying this, rather than making of from letter A, as it is time consuming. Now you know why most kitchens have the buillion cubes which taste of additives.
For dark stock, use bones from roasted Sunshine Chicken. For clear soup stock, use the bones from Sunshine that had been steamed or boiled.