I have noticed that all my wheat beers have had a greenish yellow head to them. Taste has been good on all but the first. Any ideas why the head is not white?
the closest ive ever seen to a greenish head is hop sludge in the foam in my hydrometer sample. I have seen everything from slightly yellow to almost black.
Some of my really hoppy beers (and some super hoppy beers I have had at breweries) have a slightly greenish tinge to the head...but that shouldn't be the case with a hefe unless you are hopping the heck out of it.
I wonder - I don't usually drain the hops from the boil after the wort is chilled. I just dump the whole mess into the fermenter - sludge and all - and rely on the stuff to settle to the bottom of the fermenter. I also don't use a secondary. Do you think that could impact the color of the head?