I'm not an expert but crystal is a steeping grain (malt) while tettnanger is a hop so at least to me it doesn't make sense.
edit: nevermind, upon further research there is a crystal hop that I've never heard of. The website I saw listed substitutions as: Mt. Hood, Hersbruck, French Strisselspalt, Liberty, Hallertau
Last edited by cincybrewer; 12-06-2010 at 09:00 PM.
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