ToME: the Tales of Maj'Eyal

Anyone remember how to satiate hunger with a vampire class? The description I see says you can satiate hunger while next to a monster, but I can't figure out what to hit to do it...

(Sorry, posted this in the spoiler forum originally...)

It has been years since I played a vampire, so I don't remember. Is there a special power under the U or m menu?

I always carry a stack of Satisfy Hunger scrolls when I am playing an undead character.

Vampiric Drain is under the U menu.