Last winter/spring I brewed two lagers, a dunkel and a maibock. The dunkel was 90+% light Munich malt, and the maibock was about 60% pilsner and the rest light Munich. They were both fermented with the same Saflager 34/70. The both tasted great. The problem was/is that after the first few sips, there is no head or foam left in the glass.
Now before you think it's the glasses, let me tell you that I have five taps going all the time, and none of my ales has this problem. I hand wash and dry my beer glasses, and I've pretty much ruled them out.
Is it the yeast? That and the Munich malt are the common variables here.
I'm done with lagers for this year, though it would be nice to have a new approach for next lager season. Thanks in advance for your help.