Essence is a fluid added by Industrial Foregoing. It is a fluid form of Experience and is created by machines performing actions that would normally create Experience, had they been performed by a player. Essence is created when Experience orbs are collected by the Mob Crusher and when items are smelted in the Resourceful Furnace. The fluid is used in the operation of the Ore Processor, Mob Duplicator, Enchantment Applicator, and the Enchantment Factory.
When consumed with a straw, Essence will spawn experience orbs on the player. Essence placed in world will emit a light level of 15 and will inflict Night Vision status effects to entities touching the liquid.