Anyway, I'm obviously not a vampire (or a witch, although some people might disagree) because I like vervain, and I drink the herb as a tisane, letting the dried leaves infuse in hot water. Vervain is also known as verbena and verveine, and both its leaves and flowers are edible, although I've only tasted the former. When buying dried vervain, look for large, whole leaves that are pale green; if they're starting to turn yellow or brown, they're too old. If possible, smell the leaves: a strong fragrance means a stronger flavour.
The medicinal properties attributed to vervain include increased milk flow in lactating women, a calming effect on nerves and inflammation reduction in swollen joints.
Vervain tisane is pale green-yellow, with a lemony fragrance and flavour. I like it as a digestif after dinner, because it's light on the palate. Poured over ice and sweetened with crushed fresh fruit (such as raspberries and peaches), the tisane makes a delicious summer drink.