What I meant was ClarityFerm/Brewers Clarex, it’s an enzyme preparation used on the cold side. It was originally designed to remove haze and produce clearer beers, but was found to also reduce gluten content to below detectable thresholds. It’s what commercial breweries often use. In some countries, beer produced that way can only be advertised as “gluten-reduced”, not “gluten-free”, though. In terms of ease of application, it seems to be the way to go if you don’t have easy access to malt of gluten-free grains. But alas, since I’m not a celiac myself, and testing is too expensive, I won’t put the burden on an actual celiac how well this works in my setup.