How to make the Brilliance – . This drink is kind of like a Tequila greyhound except the Grapefruit Juice is the Grapefruit Soda ‘Squirt®’. We call it brilliance because the taste is so clear it tastes like nothing. Say hello to my friend gravity while you are down there.. ” Invented in west marin county CA USA by sean ocean.Fill Collins Glass half full of Ice