[borndead1]

As tobacco ferments, it releases ammonia. Tasting ammonia is quite common, especially in "fresh" cigars, or cigars with a lot of ligero tobacco in them, as ligero takes much longer to ferment than the viso and seco leaves of the tobacco plant.

Smoking too fast/drawing too hard can also make a cigar taste nasty.

A cigar that is too moist can also taste nasty. I shoot for 62-65% humidity in my humidors.

If I get a cigar that tastes nasty like that, I take the rest of them (5 pack, box, etc.) and let them sit for a few months in the humi. It usually does the trick.