See I knew that, dunno why it slipped my mind. I recently had a good at the world’s strongest coffee, it was bad very bad. The beans tasted like it was burnt or overcooked for days. However they did redeem themselves with a new batch that was the best cup of joe I ever had.
What happened according to them was that the oil was backed out of the beans too much hence the burnt taste. But on the dialback it tasted better the second cup around. I want to buy some to brew at home but I can never catch it when it’s in stock. But if your interested look up “Black Insomnia”