Hartshorn

Hartshorn is the result of boiling Red Deer Antlers in a Cauldron. When placed in a boiling cauldron, Red Deer Antlers will eventually convert into a random amount of Hartshorn between 0.01kg, and .15kg .
While the horns must be boiled for roughly two hours, the process can be interrupted and started intermittently at no penalty, as progress will never reset.