How do you get rid of bitter taste in gumbo?

Gumbo can be bitter if you burn the roux. Gumbo should be slow cooked all day to allow the spices and vegetable flavors to meld. The juice may taste bitter at first but will improve over time and after you add you main ingredients, i.e., seafood or chicken and sausage, etc. Do not add file' to the pot. Add it after it is served. A little bit goes a long way. Too much file' will make the gumbo groppy.