I remember my grandfather had several (maybe a dozen?) of those on a high shelf at his house. I asked my mom once what they were, and she said Chinese liquor. I never saw him drink from any of them, and in retrospect, they may have been holdovers from his ‘frat boy’ days. (Kidding: Gong was never in a frat.)
I do know from family lore that he used to make all kinds of Chinese potions with scorpions, snakes and birds, so it’s possible that those jars had animal bits in them.
Well, these days empty bottles can cost good money. I remember once seeing a empty glass jar at Michaels for ~$7, and then also a fragranced candle with the same looking glass jar was on sale for $5. They look like this (a little wider, not exactly this).
Forgot to answer. Yes, I did finish the burger. It wasn’t too much or too awful. It was more like “this is a strange taste that I didn’t expect”. I often try to put unusual things on burger to give it a try. I have put Yuzu Kosho (Yuzu citric peel/juice with chili pepper) on burger. I have also put some Szechuan pepper sauce too…etc.
I generally use whatever Shaoshing wine is available in HMart. I’m pretty sure it’s salted because here in NY, supermarkets cannot sell regular wine.
I wouldn’t use vermouth as a sub. Either dry sherry or sake would be better choices. I have subbed sake (inexpensive Gekkeikan) a few times in sauce recipes that called for a tablespoon or two of the Shaoshing without any issue.