What does a "cooking fire" do?

Yew Cooking Fire---Level 60 Firemaking Required (Wood) 300K (Coin) 500

In Melvor Idle, I've upgraded my cooking fire, but I'm not sure what it does (if anything). I think it gives an XP bonus, but the Firemaking page says:

Bonfire Status: Inactive
XP Bonus when active: 0%

Question: What does a "cooking fire" do?


Solution 1:

I'll answer this myself, so as to not leave the question unanswered...

Under the Cooking tab, you can see there is a bonus to cooking XP:

Fire Status: Active; Current Fire: Mahogany; XP Bonus: +25%