Controlled Heat Potion

The Controlled Heat Potion is a potion that can be made with Herblore. While active, it causes Firemaking bonfires to automatically be relit after they burn out at the cost of one potion charge instead of logs.

Notes

The potion will only restart an existing bonfire, it won't start a bonfire if none is already going.
The potion is one of two non-combat potions (alongside the Perfect Swing Potion) that doesn't work offline.
The bonfire will have the duration and XP bonus of whatever log the player is burning at the time the previous bonfire's duration runs out.
If the player is not burning logs when the bonfire runs out, the potion will not restart the bonfire.

Creation

Item Creation
Requirements	Level 20
Materials	2 Sourweed Herb 3 Mahogany Logs
Base Quantity	1
Base Experience	18 XP
Base Creation Time	2s

Tiers

The tier of potion created depends on the player's Mastery. See the Herblore page for more details on how potion tiers work.

Tier	Charges	Effect
I	5	Automatically relight Bonfires for free using the currently selected Logs. Does not work Offline
II	10	Automatically relight Bonfires for free using the currently selected Logs. Does not work Offline
III	15	Automatically relight Bonfires for free using the currently selected Logs. Does not work Offline
IV	25	Automatically relight Bonfires for free using the currently selected Logs. Does not work Offline

Potions
Combat Potions	Melee Accuracy Potion • Melee Strength Potion • Melee Evasion Potion • Ranged Assistance Potion • Magic Assistance Potion • Regeneration Potion • Damage Reduction Potion • Magic Damage Potion • Ranged Strength Potion • Diamond Luck Potion • Divine Potion • Lucky Herb Potion
Skill Potions	Bird Nest Potion • Fishermans Potion • Controlled Heat Potion • Generous Cook Potion • Perfect Swing Potion • Seeing Gold Potion • Gentle Hands Potion • Generous Harvest Potion • Skilled Fletching Potion • Crafting Potion • Elemental Potion • Herblore Potion • Performance Enhancing Potion