Tradition has it that only way to crunch a leaf, really, is to step on it. The ideal crunching leaf is singular and, obviously, dry, and it sits on asphalt or pavement (as opposed to, say, grass, which gives too much). This all goes without saying, probably. There are a few additional factors, though, that can substantially affect your leaf-crunching experience; all of which, unfortunately, are beyond your control. In a way, though, the rarity of the perfect crunching leaf only adds to the satisfaction of finding one, in the same way Christmas’s once-a-year-only policy keeps it fresh and special.

1. Shape of the leaf: The perfect crunching leaf is elliptical and anywhere from two and a half to three and a half times longer than it is wide (not including stem).

2. Curl of the leaf: Curl is one of the most important factors in whether or not a leaf has serious crunch potential. The ideal leaf has a medial curl which forms an arc roughly the shape of a half egg.

3. Placement on the pavement: Your leaf should be lying on its side with its back facing away from you, i.e. in the same direction you are walking.

If you’re fortunate enough to spot the perfect crunching leaf in your path, plan your steps several yards ahead so you can crunch it without breaking stride. The best crunches are usually performed nonchalantly, like it’s no big deal. Strike the leaf firmly but not forcefully (any extra air forced downward by your accelerated step may displace the leaf before you strike it) with the front portion of your shoe or sandal — anywhere between the end of your arch and the middle of your toes.

The resulting crunch should be wholly satisfying. A perfectly crunched leaf is one of the true joys of nature.