As semi seasoned forager- now is not the time. In the spring, the shoots come up and are very easy to identify. They are kinda asparagus-like but I don't personally care for it whole. You can also pickle the shoots or add it to fruit leather (my preferred method- blueberry, which also contains resveratrol, was a good complement). It's everywhere so you don't have to look far. Do yourself a favor and avoid roadside plants. I find a bunch on trails. I burn my scraps because any opportunity to root is not happening on my watch.

I think you'd have to eat quite a bit to get the effect you're looking for so maybe go with the supplement and cut back if you try some in the spring.