Most starchy/carbohydrate foods can be readily scrounged from the foliage. Meat, or protien from fish will of course be necessary.....but hunting often forces one to use more calories than the food caught will supply and fishing is a tenuose venture at best (even building fish traps is pretty hit and miss) so your best source of protien are insects and other inveterbrates. Sounds gross, but earthworms, beetles, ants etc are a readily available source of protien when you need to survive in the wild for an extended period of time (hope y'all ain't eating lunch while reading this
).
Cooking utensils are nice, but not necessary.....skewer food on sticks to slow roast, or if you find yourself in arable land dig a little and find clay.......simply wrap any food in the clay and bake it in the fire (hedgehog is particularly good, as the clay hardens and removes the spines while it bakes)....clay baking also ensures that esential nutrients etc are baked into the food, instead of being burned off or evaporating.
Lighting fires is also overlooked, of course matches/lighters, and flint and steel are a must......but a lense of some description (or a friend who wears glasses) will be handy in the long term.....tis very easy to start a fire with a bit of sunlight, a lens and some shavings from a silver birch bark (the bark is very rich in sulphor.....goes up like a firework)