Normally when the words "bubbly" and "alcohol" are used in conjunction the product in question is champagne or some other sparkling wine. However, the good folks at Willett Distillery in Bardstown, Kentucky might want to offer an alternative.
The picture below is from their Instagram feed. It is a mash tub full of fermenting rye grains. Willett, which is just down the road from the Heaven Hill visitor center and rickhouses, is a small family run distillery making both bourbon and rye. The Complementary Spouse and I toured Willett after attending the 2016 NRA Annual Meeting.