So, you bought a bottle of Banks & Solander Limoncello or Limecello and overtime you notice murky or cloudy particulates clumping together in the liquid. “Oh no! I’ve received a contaminated batch!” you gasp and immediately go to throw it away or write to us in a panic. However, you don’t need to be alarmed. The batch has not been contaminated, algae is not growing in your bottle, and you don’t need to worry about being poisoned by this. What you are seeing is a phenomenon called Flocculation.