Tasty Mithril

 is an item that is obtained during the Mithril Gourmand event. After gathering enough and giving it to Don Espresso, the event will end.

Obtaining
To obtain Tasty Mithril, you must mine during the Mithril Gourmand event in specific areas of the dwarven mines. You must collect 10 Tasty Mithril for a bonus reward.