Red pizza dough with an additive by Enky Energy. (Jenn Harris / Los Angeles Times)
A man rolls out the red dough at the Pizza Expo in Las Vegas. (Jenn Harris / Los Angeles Times)
The red dough gets its color from this additive. (Jenn Harris / Los Angeles Times)
Black dough from Molini Spigadoro. (Jenn Harris / Los Angeles Times)
The black charcoal dust is used to make this sandwich bun. (Jenn Harris / Los Angeles Times)
