Coconut milk

Coconut milk is an ingredient for several high-level Herblore potions.

It is needed to make Antipoison+, Weapon poison+, Antipoison++, and Weapon poison++.

It is not a secondary ingredient to potions, as limpwurt root and red spider's eggs are. Rather, it replaces the water in the water-filled vial with coconut milk. Players must add a herb and a secondary ingredient to this, as with other potions.

To obtain coconuts, players can grow them on palm trees using the Farming skill, buy them from other players, or retrieve them from the nature impling in the Impetuous Impulses minigame.

How to make coconut milk
Players must crack coconuts by right clicking on it and selecting "Break open", and then use the open coconut on a vial, to obtain a vial full of coconut milk and a coconut shell.

With a recent update, the Make-X system process has been added to this, and now one use can open all coconuts in a players inventory as well as pour all the coconut milk into vials at once.

Trivia

 * Before an update, if presented to a Tooth Creature, it would refuse to drink coconut milk, despite claiming that "all milk is good". The creature would say it wouldn't drink it because it's "not real milk".