Clear plastic soft drink cans with metal tops

I can add a little something to the thread from the science perspective. One of the big challenges for plastic bottles (and in this case plastic cans) is that the gas (carbonation) diffuses out through the plastic on a noticeable timescale. Cans have a much longer shelf life- and the shorter “Best If” dates on 20 oz. is due to their going flat not actually anything about spoilage. 2 L bottles are more immune due to their larger size and smaller proportional surface area- which also explains the 20oz vs. 12 oz change.

So Coke and Pepsi and all of their friends have been trying to achieve a better plastic than PET (polyethyleneterephthalate) for years and there is now a new plastic just around the corner called PEF which uses a sucrose derivative (so bio-based) which is much more impermeable to CO2 and thus will change how bottling occurs- even potentially extending to beer (in which carbonation and shelf life are even more important and have thus totally evaded plastic to date). The two remaining challenges are scaling up the production process and 2. developing a recycling technology as PET is one of hte most recycled plastics currently.

And wiki says the answer is…Aluminum bottles, aka bottlecans.
I first noticed them maybe 2 years ago, blue or red Bud bottles, but apparently they’ve been around since the turn of this century.

I enjoy a good craft beer, but I’m not a snob. Camping and fishing require a good number of cheap beer. And the Coors Light 16 oz screwtop bottlecans make the perfect spill-free solution for fishing waders. They’re harder to find than cans or bottles, but usually the same price (9x 16 oz vs 12 x 12 oz = 144 oz).