The Magic Mixer first appears on level 1326 and looks like a clock-face with batteries either side of it (see above).
After a set number of turns, the Magic Mixer will spawn a blocker on squares around it. If these blockers are not cleared, the Magic Mixer will continue to generate extra items and take up spaces on your board.
Later in the game, you'll also find 'Locked' Magic Mixers, which will only begin spawning items when the lock breaks.
Other items created by the Magic Mixer can include Marmalade, Regular Icing, Multilayered Icing, Chocolate, Layered Chocolate, Candy Bombs, Liquorice Locks, Liquorice Swirls and Dark Chocolate.
You can destroy a Magic Mixer by matching adjacent candies or by blasting the mixer with a special candy, like the Striped or Wrapped candy. You'll need to attack the mixer multiple times for it to break down and disappear.
Sometimes levels depend on the Magic Mixers, and your task for the level will be to collect items generated by the mixer. Be sure not to destroy the Magic Mixer too soon in these cases, or you won't be able to complete the level!