I would love to save all that money I waste throwing out those 1/2 empty 2-liter bottles of pop. I think it might work if there was just a simple spout, similiar to those on water jugs and coolers, on the bottom side of a 2 liter bottle. You could dispense your cola without losing carbonation. There would need some sort of airlock idea to allow the bottle to replace lost volume.
-- tatmkr, Jun 21 2006

Deliberate agitation SDI_3a_20Sodapop_20Defense_20Initiative
[normzone, Jun 21 2006]

hint: don't buy the 2 liter size.
-- xandram, Jun 21 2006


over here you can gety a 2 liter for 99 cents while a 20 oz. now costs1.29
-- tatmkr, Jun 21 2006


I can buy beer in this manner at the local brewery, although it doesn't have a spout.

We were by the soda pop machine (cans) last week and one of purchasing guys commented "you have a product that explodes if shaken - so what kind of engineer designs a machine that drops the product in order to dispense it?".

I could only think of one good answer - a weapons system engineer [link]
-- normzone, Jun 21 2006


This may be naive, but could you keep a few empty 1-liter bottles in your kitchen and pour the last liter from the 2 into the 1 using a funnel?
-- phundug, Jun 21 2006


an important point i missed is that this would help against the repeated openings of a bottl- of which squeezing helps, but doesn't stop.
-- tatmkr, Jun 21 2006


This would not work unless you replace volume with CO2 at an equivalent pressure that in the bottle originally. If you replace with ambient pressure air, CO2 would still be liberated from the liquid. I know because I do this for my homebrew beer, I pressurise the keg with CO2 and the C02 pressure serves as a preservative and antioxidant and a method by which to push the beer up a beer line and out of the tap. Lost pressure is replaced with fresh CO2 from a canister as the beer is drawn out to keep the system in equilibrium.

The best way (without a CO2 system) to keep the carbonation in your fizzy drinks is to not open the bottle until the contents is very cold and keep it this way. (When a liquid is cold it disolves more CO2 gas, the warmer it is, the less gas it can hold, losing carbonation.) When you have poured your glass (as gently as possible, trying to generate the least amount of carbonation-losing bubbles as possible) squeeze the bottle until you have squeezed out all of the air. You are left with a squashed bottle with its whole volume filled with drink. Put the cap on tightly and place straight back in the 'fridge.
-- webfishrune, Jun 21 2006



random, halfbakery