We toured the Hofbrau Brewery in Munich last month. It was an extensive tour, with tastings midway through of unfiltered, unpasteurized beer right off the line. Very, very good.
I just heard back from the brewery this morning...
"We use Pilsen malt, light beer is brewed using an infusion process. Depending on the type of beer, the cooking/boiling time is between 2 and 4 hours.
The grains are crushed in a hammer mill and are delivered to us after processing in the mill.
In infusion processes (like our light beer), the entire contents are heated in the brew kettle."
Perhaps this is why my friends and I actually prefer Pilsner Urquell.