Originally Posted by Yooper
Yes, I think shaking it is a mistake, although people do it and say it works for them.
But I think of a bottle of coke- and what happens when it's shaken.
The foam is from the too-short lines, I believe.
I'm having the same problem. I think the beer is still undercarbed, and I'm finally seeing bubbles rising to the surface in the glass, but there is tons of foam on top of the glass (1/2 the glass is foam).
I used a beer line equation to calculate the length of the lines for the pressure I'm serving at and it said I need 5.5 feet. My lines are 4.7 feet. If beer lines are 10 feet, wouldn't it be too long?
Length = (serving pressure -1 – (height/2))/resistance.