noun / verb
crackle
KRAK-uhl/ˈkrækl/
A succession of small sharp cracks.
The fire's crackle accompanies tiny sparks and snapping twigs in the hearth.

Etymology
Crackle turns crack's sharp sound into a repeated action. The ending makes it a succession of snapping noises rather than a single abrupt report.
In context
as you light it you'll see it kind of crackle across the whole charcoal disc and that's when you know the whole thing is lit up
More examples
- Logs crackle in the fireplace.
- The radio crackles whenever the signal gets weak.
- She hears a faint crackle as she unwraps the candy.
Forms
crackle · crackles · crackled · crackling