I'm on a quest to solve a mystery regarding anise hyssop tincture. We've made two batches of tincture in the last year, one with dried herb and one with fresh. They were both prepared with 100 proof alcohol, and after they were strained both produced a greenish sediment/sludge, some of which stuck to the bottom of the jar. Does anyone know what caused this, or has anyone else experienced this? We ended up getting rid of both batches, so I don't have any pictures unfortunately. Thank you!