Burnt prunes. Burnt raisins. But mostly, burnt caramel. Then Worcestershire sauce intermingling with Kikkoman's regular soy sauce. Fresh celery, carpet, shredded wheat nuggets, and old library books. It's somewhat fungal, like foot fungus.
Burnt coffee, and lots of it. Cardboard, or like licking a whisky label. Horseradish and dirt. It's so chemically, like someone tried to make a diet salty coffee soda syrup then gave up, added new make, and called it whisky. Bitterness. Sadness.
It's still coffee-ish, but with ammonia. Acrid boiled collard greens.