Review on 🍺 Glass Swing Top Beer Bottles - 16 Ounce (6 Pack) Grolsch Bottles with Flip-top Lid – Perfect for Carbonated Drinks, Kombucha, 2nd Fermentation, Water Kefir, Clear Brewing Bottle by Renee Zahid

I was delighted with the order, then after one wash I was bitterly disappointed that the bottles - after hand washing - oxidized on the metal part of the closure system. On each bottle there is a white powdery oxidizing substance on the metal itself. If I'm trying to bottle, there's no way I want this stuff to end up in my fermented beverages. I have other bottles from other sellers that don't have this effect, I've washed them several times. The cheap metal was clearly used to save costs, the problem is that while it's dishwasher safe it would probably cause an even bigger problem than washing by hand. They are definitely not washable in the sense that the metal will corrode immediately. Very disappointed.