A roux is the base of numerous Cajun and creole dishes. In Louisiana, natives have a joke about how long it takes to make the roux for certain dishes. Etouffee is usually a 1 beer roux while a full fledged gumbo is a 2 to 3 beer roux. Obviously meaning how long it takes to DRINK the beer. The cook time will vary depending on how dark you want your gravy. NOTE: The measurements I used are normally what I make for a Sunday pot of gumbo, southern style. That means it makes a lot! You may want to only use half for normal people!