For the past year I have been offering a new(er) product, the Big & Easy Bottle Brew Beer, and have been really impressed with how easy and tasty it actually is!
It is hard to find a better deal on beer (only $6.25 for the equivalent of a 6-pack), but it isn’t quite perfect. The biggest complaint I have received is that it is just too much beer to drink in one sitting and it goes flat in the 2L bottle too quickly. However, I have just found a solution to this problem!
The “Fizz Keeper” has been designed specifically for this purpose (albeit marketed for soft drinks) and has received rave reviews from what I have seen so far.

Keep soft drinks from going flat with the Fizz Keeper®. After removing the cap, screw the Pump & Pour on to the bottle. Squeeze the Pump & Pour several times until the plastic bottle becomes firm. (Don’t over pump; the Pump & Pour works best under low pressure.) When you’re ready to dispense, press the tab to flip the top open – there’s no need to remove the Pump & Pour. Reclose the cap and squeeze the pump to restore the pressure.

Priced at only $4.99 this is a great addition to the kitchen for use with any carbonated drink you have in the fridge. I have got a few in-store now and am looking forward to trying it out myself!