These saké bottles are in the shape of kagami mochi, the stacked mochi topped with a bitter orange symbolic of New Year. I didn't read too closely, but perhaps the alcohol is orange-flavored? Or perhaps just rice-based, like mochi (and of course saké).
The feature of these may well be the bottles, because glass-blowing has become a local craft. In particular, there's a glass or stone, not sure what it is, that continues to glow after having light shined on it. It's vaguely reminiscent of those glow worm toys from the early 1990s, but much less plastic.