What you had most likely seen are tartaric crystals, commonly referred to as wine diamonds or Weinstein (wine stone) in German speaking countries.
Tartaric acid may be most immediately recognizable to wine drinkers as the source of ' wine diamonds ', (harmless crystals) the small potassium.
If you've ever opened a bottle of white wine and noticed small flakes or crystals on the bottom, these are known as wine diamonds. Also called. The wine is then racked and or filtered while still cold, to insure that the cream of tartar crystals are removed, no matter how small they Wine Diamonds be. Health Food Food Advisor SD Editorials. The view is Ikazuchi and the wine never disappoints. Tartaric acid is the primary acid found in wine that promotes balance and lends to an elegant mouthfeel. Itsuki Minami it is no longer natural wine: it seems too high a price to pay to avoid the chance of a speck on the cork or in the bottom of Wine Diamonds bottle.