Coffee for bittering ...?

[Willee]

To me coffee is bitter ... would adding an ounce or so of coffee grounds to the boil achieve bittering the same way hops will?

 

[Keith81]

It would add roasted bitterness similar to roasted malts. Hop bitterness is a different flavor so IMO I wouldn't use it as a substitute. If you are making a coffee beer you can cut back on the bittering hop addtion.

 

[homebrewer_99]

Too much roasted coffee or roasted malts give the beer a harsh burnt flavor.