Sauce
Begin by slicing the potatoes with their skins on, then cut them into sticks.
Next, add all these potatoes into a container with a lid.
Season them with the salt and add enough warm water to cover them all.
Cover them with the cabbage leaves and seal the container.
Mix everything very well and let these potatoes soak for 5 days in the fridge.
During this time, the potatoes will ferment and soften.
After the time has passed, in a small bowl, add the mayonnaise, the mustard, the ketchup, the barbecue sauce, a pinch of black pepper, the garlic powder and mix everything together very well until combined.
Next, remove the potatoes from the container, transfer them to a cutting board and dry them thoroughly, removing any excess water.
In a large pan over medium to low heat, add enough vegetable oil until it covers half of the pan and let it heat up.
Add the potatoes we prepared and fry them until golden brown.
Serve with the sauce we prepared.