Firelli is a unique hot sauce imported from Italy. We thought we would give it a try. This is a fairly mild sauce. The pepper that fuels this warmth is the Calabrian chile. Balsamic vinegar adds a freshness and sweetness to round out flavor. A unusual ingredient of dried porcini mushrooms is also on this ingredient list. This flavor adds that extra little umph which translates to the umami sensation of craving the next serving. This combination works. It is a perfect pairing for pizza or pasta. These jars will not last long. I bought them mail order for a reasonable price. They are making their way to local supermarkets and I will probably pick up some more.