Coconut milk is an ingredient for several high-level Herblore potions. Players must make it themselves or buy it from another player, as it is not sold in stores. It is needed to make antidote+, antidote++, weapon poison(+), and weapon poison(++).
Players must crack coconuts open with a hammer, and then use the half coconut on a vial, to obtain a vial full of coconut milk and a supercompostable coconut shell.
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.