...You'd Best Come A-cookin' is an achievement that requires the player to cook a raw rocktail on a range in the Falador area.
Trivia[]
- This achievement used to be a task prior to the release of the Achievements System on 18 April 2017.
- The name of this achievement and When This Cavern's Rockin'... are a reference to the phrase "When this (room or vehicle)'s A-Rockin', Don't come A-Knockin'", indicating the inhabitants want privacy.