I found myself in Sonoma County last week where I finally got to see one of the so-called ‘egg fermenters’ firsthand. Cast from concrete and inspired by the clay anfora vessels used in ancient winemaking practices (and most famously these days by Josko Gravner), the purpose of the egg is to maintain a steady temperature during fermentation. Concrete is also slightly permeable, so unlike, say, stainless steel, it allows for subtle interaction with oxygen. They also just look cool.
The fermenters below were made by Nomblot, a company located not far from Beaune. For readers of French, here are some tech specs. It seems the folks at Nomblot employ the golden ratio to design their egg. Nifty!
I kind of expected Robin Williams to pop out of the top in an orange jumpsuit. Didn’t happen.