Yeah, I think he means frostweave. I'm currently at 446 tailoring (almost there!) and I've noticed that while I'm questing in Icecrown I've been getting a lot of drops. There's hardly any beasts out there, it's almost all undead and human mobs, which are the ones that drop cloth.
Guild Wars 2, Crystal Desert server:
Inga Freyasdottir, lvl 40 Norn Mesmer
Deathbringer Kaami, lvl 16 Asura Necromancer
Popina, lvl 15 Asura Elementalist
Althaia Willowbark, lvl 7 Sylvari Engineer
Maeve Amnell, lvl 4 Human Guardian The MMO-Zam's FB group.
Please message me first so I know who you are.