Maple trees - For sugaring and collecting inner bark, the spring with warm days and cold nights. Seeds in the late winter/early spring, young leaves when ever present, best in spring. Sap has to be boiled to reduce it 30 to 50 times, seeds raw, parched, roasted or boiled without wings. Taste first for bitterness. Inner bark dried, pounded, then cooked. You can eat the wings if you don’t want to remove them but they cam be bitter and hard to digest.