I change the draft tube from a 4ft to a 6ft this am (8). I poured a1/4 glass. As we all know we do not throw away. Had some foam at the bottom of the glass. I usually put my glass in the refrigerator. Today I rinsed the glass. Instead of drinking the water, I dumped the rinse. (I threw the water , drank the beer). I did not realize that is what I did and chuckled to myself.