I recently fined a 5 gallon carboy of Black Malvoisie that wouldn't clear with SuperKleer KC. I have used this fining agent several times in the past as it produces rapid results. However, I noticed that it seemed to impart an aftertaste in the wine that I hadn't noticed before.
To be certain that it was the SuperKleer causing the aftertaste, I compared the fined wine with a magnum (of the same wine) that hadn't been fined and there was a definite difference in the taste profile. It seems to leave somewhat of a salty taste. Has anyone experienced this before?