During Chinese New Year, Chinese people are persnickety about auspicious symbols and meanings. While taste is important, everything we eat has to bear a sense of fortuitousness. So when you mention fa cai (black moss) to older folks, it conveys joy, luck and prosperity. Just what is fa cai? Well, it is a key ingredient during this festive period and its symbolic meaning is basically “prosperous”; which correlates to “Gong Xi Fa Cai” when people wish each other during Chinese New Year.