Maximising Spider Essence

Every source of Spider Essence from Arachne, and the bonuses that boost it.

Where the essence comes from

Spider Essence: a guaranteed 30 per boss.
Salvaging Arachne armour: you get about 1.25 pieces per boss on average, worth about 7.5 essence per boss with no bonuses.
With the maximum essence bonuses, the salvaging part rises to about 10 per boss.

The bonuses

Essence of Arthropod: 10% more Spider Essence.
Echo of Essence: 2% more essence.
Echo of Echoes: 1% more essence.
Cooled Forge 5 from the ice essence shop: 20% more essence from salvaging.

What that adds up to

About 40 essence per boss with the best setup (30 guaranteed plus about 10 from salvaging).
At 112.5 bosses per hour, that is about 4,500 essence per hour.

Put your own bosses per hour into the Arachne rates maths calculator to get your own figure.

Good to know

Ironman accounts cannot sell Spider Essence, so it is left out of the Ironman profit numbers.
Faster kills mean more bosses per hour, which means more essence. See how to quick place.