What Does "Liver Flushing Clean" Really Mean?

Hello folks. Thanks for keeping the forum alive.

Andreas tells us to keep flushing the liver until it flushes clean. I need info on what that really means. The last flush I did, my 10th, produced a few sunflower seed-like stones and chaff. Nothing more. Of course I will flush again to see what happens. But would this kind of flush be considered a "clean" flush? Or are we talking nothing, nada, completely clear?

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