Strong naturalist's potion

The Strong naturalist's potion is a one dose potion only available in the Dungeoneering skill. Using the potion boosts Cooking, Farming, Herblore and Runecrafting by 6 + 6% of levels.

It is made by adding Winter's grip and Misshapen claw to a vial of water. This requires level 96 in Herblore and grants 279 experience in Herblore. This potion can only be made in dungeons with complexity level 5+.

Reference

 * RuneScape Game Guide: Dungeoneering - Herblore Tables