TL;DR
Does anyone know when the Grolsch Brewery in Holland started exporting their beer to the US in green flip-top bottles (instead of amber flip-top)? Did they change the flip-top from ceramic to plastic at the same time?
OK, this is going to be pretty obscure and could belong in MPSIMS, but I am looking for some factual answers and the depth of knowledge here may just be able to produce them
As many know, Grolsch Brewery in Holland used unique bottles for decades. An example here and here. I use the past tense because I am not sure they still use the swing-top design. Before the crown cap was invented, the swing top design was used throughout Europe (western Europe, anyway, from my digging around on this). They may still sell them, but I know they sell their beer in crown-capped bottles, too.
Anyway, when I was in College (late 70’s early 80’s), I could buy them. They were expensive for a college kid, but I’d buy one or four occasionally for a treat. Anyway, back then, the bottles were amber and the flip-tops were ceramic.
A decade or so later, I began brewing my own beer. These the swing-top bottles are valued by homebrewers because you can seal them faster and don’t need a capper. Well, by the early 1990’s, Grolsch had switched to the green bottle and a plastic flip-tops for their Premium Lager but still sold their Amber in, well, amber bottles. The plastic top is really irrelevant as far as re-using the bottles is concerned, but the green bottle is viewed as inferior. The reason is that the brown or amber bottles block more of the harmful light that can affect the flavor of the beer. Not a problem if you keep the bottled beer away from light, but if exposed to sunlight (or even fluorescent light), a beer in an amber bottle will fare better than one in a green bottle.
OK, we’re almost there… A relative of mine just gave me his collection of flip-top bottles (he used to brew, but has not brewed in years and was moving, so I got lucky). Probably about 100 or so. The majority of them are Grolsch bottles, some of them are amber but most of them are green.
So, my question is, does anyone know when Grolsch started using the green bottles? Did that coincide with their using ceramic tops?
I just am curious about these bottles and wonder about such things. As I am going to fill them with my own beer, I am going to remove the tops (to make cleaning and sanitizing them easier), and I wonder if I should spend much effort in making sure the right tops go on the right bottles.
THanks,