I use 2-Row, corn, and Liberty to make Pre-Pro Pilsner. I use Cluster to bitter when I have it on hand, but Liberty works really well as dual-use hop in this beer style. I prefer to use flaked maize because it is simpler to use. However, I have been known to use corn grits, corn meal, or even corn starch and a double mash if I do not feel like making the trek to my LHBS.