Dungeon Master Mayhem: Delicious in Demon Wastes (D&D 5.5)

The eager goblin monster hunter Ghavil has once again organized her illegal monster cooking tournament for scoundrels and rapscallions from around the world to taste the exotic flavors of otherworldly beings. Today's menu: Glabrezu roast served in a Yochlol broth! One small problem however: How do you cook something that disolves into ichor when killed?

This is a one-shot at level 8. Need a pregenerated character? Ask asap!