Tie the woodruff with kitchen twine, let it dry overnight or freeze it briefly.
Put white wine in a container and hang the woodruff upside down. It is important that the stem ends remain above the surface of the wine, otherwise the Maibowle will become bitter. Chill for about 1 hour and let it steep.
Wash the lemons thoroughly, grate them dry and cut them into slices. Remove woodruff and add lemon slices. Top up with well chilled sparkling wine.