I took a long hiatus from brewing due to kids and in the meantime commercial magkeolli (Korean lacto rice beer with a LOT of sediment at the bottom of each bottle) brewing really took off. Which is great for me when I serve homebrew everyone now understands about yeast sediment, even the most dedicated of piss pilsner drinkers.
Man, I had some of that when I was in Seoul this summer. I couldn't quite put my finger on what gave it that flavor, and now it all makes sense.