Brewing alcohol became 100000% more exciting when I realised it doesn't just produce alcohol, but also LAVA LAMP:
This is from Day 8ish of Pumpkin Mead, after I cooked down some of the solids and topped up with more honey solution and yeast nutrient.
There's a cool effect where, in the sediment layer, trapped gas slowly builds up, forming a little peak in the sediment. Eventually, the peak reaches a critical point and forms a small geyser, shooting up a little stream of buoyant sediment! When it reaches the top, it dissipates and falls back down.
For some reason, this effect travelled clockwise around the jar for long enough that I could predict where the next jet would form, and decided to record it.
















