Two days ago @bryanalexandee sent me an email asking if I knew anything about Solein the Finnish wonder food, just beginning to emerge from its prototype phase, which is apparently derived from electricity and air.
I did and had got three references to it that I had meant to put together and post. Spurred on by Bryan’s interest I finally turned them into a short note and posted them at https://www.owenkelly.net/23403/solein/