What is the meaning of “B” on the Flavor Dial in the sodastream FOUNTAIN™?

The on the Flavor Dial means “Boost” and it adds 25% more flavor to a drink you have already made or adds a splash of a different flavor, if you want to mix different flavors.

1. Turn the Flavor Dial to the ‘B’ setting. The Light Status will illuminate Purple.
2. Place your drink below the Dispense Nozzle.
3. Press the Activation Button, for a boost of flavor!