Ulgrim's Island
From Drunkapedia
On this island you will find numerous wonders including Ulgrim's Cottage and his various stolen items and signs as well as his mini shoushi town sign renamed to ulgrim's island. You will also find Ulgrim the Unappreciated and can even obtain a shiny new Casting Stein!
Getting to Ulgrim's Island
Ulgrim's Island can be reached by giving the Drunken Madman in Baishi a Mug of Winter Lager.