from the Farmington Observer May 30, 1988
Let me plead guilty to ignorance concerning woodruff and most things cooking outside of normal fare culinary. Okay, I looked it up and here's what Wikipedia says about it:
"Since woodruff is very slightly poisonous, some common sense should be applied in its use; 3 grammes of woodruff per litre of may wine is completely safe."
Wow, I'm surprised that the newspaper even let her print that part of the article considering that fact. Then again, I'm only going by what the Wiki article says and not by any expert opinion. 3 grams per liter does seem negligible enough. All right, I have no clue what I'm talking about.
As for May Wine, well...I'll link you to somebody who can explain it a better from a similar position of not knowing. There are two recipes in the article for the wine or you can purchase a bottle for under $10 if you can find it.