These are solid, compressed cubes of instant coffee (often pre-sweetened) that you drop into hot water, similar to a bouillon cube.
: Available on Amazon, these $1 cubes come in medium and dark roasts and include raw cane sugar.
If you want a solid piece of coffee to eat rather than brew, these bars are made of 100% coffee beans and cocoa butter.
: Created by Big Island Coffee Roasters , these look like chocolate bars but are made entirely of Hawaiian coffee.
: Organic Colombian coffee cubes made with panela (unrefined cane sugar), found on Amazon.
For those on a ketogenic or "Bulletproof" diet, these are solid blocks of coffee mixed with grass-fed butter and coconut oil.
: The most iconic "coffee brick." You can buy these at major retailers like Walmart and Amazon.