Hi Margaret,
Making your own roux is so easy, just in case you change your mind and want to save time and money.
Start with a cup of flour, cup of canola. In a sauce pan
add your flour, slowly add your oil and mix until it is a
paste-like consistency. Put this mixture on med/high when starts to bubble put it on medium. Slowly cook the roux until it is a dark brown. It should smell nutty when it is finished. Pull dark roux away from heat and let come to room temperature. It is now ready to add to your gumbo broth or ready to be stored for later use. It should keep for about a week.