Learn this technique to never go hungry again! UTL COMMENT:- This must be only if you're REALLY desperate!! I have never tried it but it's important to know such things. WARNING - Some trees are TOXIC to humans so make sure you correctly identify your tree before using it as a food. Cambium is a thin layer of living tissue that's found between the bark and the wood of a tree that in many cases is edible. Cambium is a good source of: Starch, Sugar, Vitamins, Minerals, Carbohydrates with 80-100 kcal per 100 g of Cambium. The cambium of some trees, like pine, birch, linden, elm, and willow, are edible. However, not all trees have edible cambium. For making cordage using cambium, basswood and cedar are excellent choices. Other trees like elm, cottonwood, aspen, maple, and willow are also known for their inner bark, which can be used for cordage. Spruce trees have a soft and thick cambium layer, making it a good source of material in a survival situation. Detailed Information: Basswood and Cedar: These trees are highly recommended for making cordage due to the quality of their cambium fibers. Elm, Cottonwood, Aspen, Maple, Willow: These trees also possess inner bark that can be used for cordage. Spruce: While not specifically for cordage in the traditional sense, the cambium of spruce trees is soft and thick, making it a good source of food and potentially cordage material in survival situations, according to Mossy Oak. Harmless Harvesting: When harvesting bark for cordage, it's important to only take the inner bark and not strip the tree completely, as this can harm or kill the tree. IN AUSTRALIA Several native Australian trees have edible cambium (the layer of tissue between the bark and the wood). Examples include bunya, lilly pilly, and macadamia trees, as well as the Queensland Davidson's plum. Some Eucalyptus trees also have edible cambium, with some species like Eucalyptus wandoo having root bark that was traditionally consumed. AGAIN - BE CAREFUL AS SOME CAN BE TOXIC. DO YOUR RESEARCH! Check out this website for more info. https://wildfoodsandwilderness.com/edible-cambium