What was that white object that fell onto Robbie Williams' microphone? – YouTube

What was that white object that fell onto Robbie Williams’ microphone?  YouTubeRobbie Williams laughs off mystery white substance  The TelegraphRobbie Williams Says That Wasn’t Coke, Love  VultureRobbie Williams mystery solved after ‘white substance falls on mic’ live on TV  The SunTruth behind viral Robbie Williams World Cup video as ‘white substance falls from nose’  Daily Star