Hi everyone, I recently decided to step the game up and bought an Ultrasonic Cleaner to steep my batches. In the photos attached below, you can see the before and after. Eight different flavors in glass bottles, entirely immersed for a two hours cycle in the Ultrasonic cleaner at 122 °F to 177 °F. (I'm keeping other eight bottles - same flavors - naturally steeping in a drawer for comparison) The results (from left to right): Lemon Tart - Tastes like a bitter, almost burnt cookie. No lemon notes whatsoever. Next. God Milk - Tastes like a bitter, almost burnt cookie. Dragonfruit has a weird plastic smell and taste. Next. Lemon Meringue Pie - I can smell some lemon, but it still tastes like a bitter, almost burnt cookie. ... I then stopped trying the remaining ones. All the bottles smell pretty much the same (even with no common ingredients) and taste very weird. I tried the recipes in dripping and changed wicks for every batch. What I'm doing wrong? Could it be the cap of the bottles? The too high temperature? Perhaps the small plastic bands?