The Truffle is a bit of nature built with earth, stuffed with air. The aim is to provide about two fingers (approximately 1 to 2 inches or three to 5 centimeters) of foam atop a full glass of beer. The scale and shape of the glassware may even affect the way the bubbles and head kind, which can impression the aroma and taste of the beer. Moreover, the common truffle prices can fluctuate drastically, additionally in relation to varied factors equivalent to availability and size. Truffles can be found priced anyplace between $500 and $5,000 per pound.