What is the meaning of “B” on the Flavour Dial of the sodastream ULTIMATE Multi-drink™?

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

1. Turn the Flavour 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 flavour!