Sugar maples are everywhere in the Hudson Valley, literally an "untapped" source of nourishment. It's the season right now. The taps flow best when nights are freezing and days warm up above freezing, getting the sap flowing up to a gallon a day. The pure sap boils down to about 1/40th that amount in maple syrup.
Ramps come in April, also in the forest, and are the first wild green food of the season. They are a wild onion (or wild leek), identifiable by their smell and by their broad lily-of-the-valley like leaves.
Get in touch with your surroundings, eat wild!