The Church of Shadows

You enter a large courtyard lit with flickering candelabras, dozens of shadowing cultists and a handful of civility as they drink refreshments. Everyone looks really excited to be there. In the center of the courtyard, there's a large building, which you can infer is the interchambers and where you need to be. And against the wall of the entrance, there are several tables with drinks. It says, here, have a drink with me to celebrate. What's in this drink? Oh, it's called glom. It's a gift from Vorgoth himself. Thank you.