If you may ever feel an interest towards collecting your herbs, apple tree leaves are a tea that’s totally slept on.

Oxidise/ ferment them like one would black tea by freezing them to burst open the cells. Then thaw them and roll them in your hands into little balls or cigars. With enough pressure so that water comes out (your hands will turn yellow from the juice). Then rest these balls for a few minutes under cover, roast them quickly in a pan (not until it smells toasty, just to lose some moisture quickly) and dry.