Move to a planet that has a 100% CO2 atmosphere...

How do you keep the FIZZ in a 2 litre Cola bottle ?????
 

Easy, don't open it , works for me .

Squeezing all the air out can't possibly be right. The Co2 wants to leave the liquid. This is what the pump does. Pressurizes the air so the Co2 has no place to go but stay trapped.

Only if you don't open the bottle in that time period. The problem is not CO2 leaking out of the cap. It is the dissolution of the dissolved CO2 in the soda into the headspace of the bottle. Each time the bottle is opened the equlibrium is upset and more of the dissolved CO2 will escape into the air at the top of the bottle. Basically the more times you open the bottle the more fizz you lose.

I'm tell'n ya, don't open it.

We're talking about a .99 bottle of pop...throw it out when it loses it's fizz.

Well, true, but who opens a 2 litre moe than 2 or 3 times before emptying it? :)

Nope. It works just fine at Bob Dole's house.

Be a man...
 

You've been taking lessons from BroWhippenidiot.

This is the absolute best way to do it. It bugs my wife because she then can't get the cap off, but too bad for her.

No kiddin - my whiskey cokes and whiskey 7's usually aren't around long enough to lose fizz.

But that being said, I use the squeeze method.

Truly, I think this is the best answer on this thread. :clap:

This doesn't work (except when the bottle is nearly full). See yunghungwell's explanation of why the fizz is lost in the first place.

The pump is the solution I would have gone with, but Phobia's (and el borracho's) cost-free solution is even better. Brilliant.

By squeezing the air out before you tighten the cap, you are leaving no room for the CO2 to escape after the cap is on.