Liquid yeast

[DuffyBros]

How long before I brew do I need to "punch" the packet of liquid yeast from northern brewer? I know it takes some time for the packet to swell up. Anyone know? Thanks in advance..

Kev

 

[Lodovico]

http://www.wyeastlab.com/hb_productdetail.cfm?ProductID=16

 

[DuffyBros]

Thank you sir