Grandma's Cordial
From Witcher Wiki
"Probably kicks like a mule"
Grandma's cordial is a quest item requested by Siegfried if Geralt invites him to Shani's party in Act II. The knight apparently has no alcohol and would gladly leave Grandma some money to cover anything he might drink... but armor clatters so much, he could hardly go downstairs and retrieve it himself, now could he?
It apparently packs quite a punch as well.
[edit] Associated quests
see also Grandma's Diary and Grandma's Pickles and Lard
