Maybe it's time for hipsters to make WW2-era coffee substitutes like chicory and acorns fashionable again: https://en.wikipedia.org/wiki/Coffee_substitute
Not sure if duckspeak =.= or duckspeak.
Edit for sauce: http://www.george-orwell.org/1984/4.html
Chicory coffee remains popular in New Orleans, but they usually blend in actual coffee for the caffeine kick: https://www.neworleansroast.com/chicory/