A Burst of Flavor is a zombie-related gameplay achievement/trophy in Mob of the Dead. It requires the player to kill ten zombies at once with the Electric Cherry's primary effect, either through reloading or by going down.
For best results, the player should gather a bunch of zombies to follow them, and then reload or go down (which also produces the same shock effect) in the middle of them. Doing this at early rounds is recommended, as it is then more likely to kill them.
Unfortunately, the player can not get the acheivement if it is done during Insta-Kill