Preheat the oven to 250°F.

Wash the ribs under cold running water and pat them dry.

Put the ribs in a large deep dish and pour the pineapple juice over it.

Cover and marinate in the refrigerator for at least 4 hours, preferably overnight.

Whisk together the salt, pepper, sugar, and paprika in a large baking dish.

Roll the ribs in the mixture.

Arrange the ribs in the baking dish.

Add enough water to come halfway up the sides of the baking pan.

Bake the ribs for about 1 hour or until they are no longer pink when the meat is sliced away from the bone.

Remove the ribs from the oven and drain.

Add the barbecue sauce and toss the ribs evenly to coat.

Increase the oven temperature to 400°F.

Return the baking dish to the oven.

Bake for 20 to 30 minutes.

Remove from heat and serve.