"Clyde Gill" wrote:

That's about how I do it, but just use the fat of my hand to seal the
flask
and shake it "not-so-gently".

After several times (no pressure builds) it gets pretty well degassed.

Thanks Clyde. I have NOT been degassing my samples, which may explain why my
taste tests don't always correspond to the numbers. I shall do so in future.

I figured "shake it gently" so it doesn't spurt all over the place when I
move my thumb, but I guess it doesn't have the same amount of CO2 as a
bottle of soda pop.