Hot-Loud-Festive. We Love Fiesta time in San Antonio. Fiesta is a 10 day celebration that wrapped up on Sunday. All we can think about is the cascarón aftermath! A cascarón is an egg that is decorated much like an Easter egg, and then filled with confetti. We picked these up at the local H.E.B before Easter. As a kid I obsessed with these coffetti filled eggs. Having a cascarón broken over your head is said to bring good luck. My Mom, who collected them over the years, hated to clean them up. Time to break out the vacuum.