You tasted the pot and winced. Too salty. Before you think about dumping hours of roux-stirring down the drain, take a breath. Over-salted gumbo is one of the most fixable kitchen mistakes, as long as you understand what works, what doesn't, and why.
Not every salty gumbo needs the same treatment. Ladle a small amount into a cup and taste it with a spoonful of plain, unsalted rice. Gumbo is almost always served over rice, and the rice softens the salt more than you'd expect.
Also note where the salt came from. Andouille, tasso, smoked sausage, store-bought stock, bouillon cubes, and Cajun seasoning blends all bring a lot of salt. If you used several of them and then salted on top, that's likely your culprit.
If your gumbo is still simmering uncovered, turn the heat down and put a lid on it, or take it off the heat while you plan. Every minute of evaporation concentrates the salt further.
This is the fix that truly works. Salt doesn't disappear. You can only spread it across more food.
Bulking up the pot with salt-free ingredients dilutes the salt and keeps the gumbo hearty instead of watery.
Avoid adding more sausage, tasso, or seasoning blends for now. They'll push the salt right back up.
Once you've diluted, small tweaks can make remaining saltiness less noticeable.
Be careful with hot sauce. Many brands are salty themselves.
You'll see advice to drop a raw potato in the pot to "absorb" salt. In reality, a potato soaks up some of the liquid along with the salt in it, so it doesn't reduce the saltiness of what's left in any meaningful way. If you want to use potatoes, dice them and leave them in as an ingredient. That's dilution, and it helps a little. Fishing out a whole potato won't save your gumbo.
For a pot that's very salty, divide it in half. Freeze one half. Rebuild the other half by adding a fresh batch of unsalted stock, trinity, and protein, essentially doubling everything except salt. Later, you can do the same with the frozen half. You end up with two good batches instead of one ruined one.
The tips above should help you rescue tonight's pot. If you want more depth, the Gumbo & Jambalaya Rescue Guide covers related problems in one place: too-salty gumbo, a roux that's too thin or burnt, and jambalaya rice that turned mushy. It's a practical reference to keep on hand for the next time something goes sideways. It won't make every mistake disappear, but it gives you clear options when you're standing over the stove wondering what to do next.
Go further : Gumbo & Jambalaya Rescue Guide: How to Fix Too-Salty Gumbo, Thin or Burnt Roux, and Mushy Jambalaya Rice (4.00 $)