Preheat oven to 350 degrees.
Place ribs in roasting pan and sprinkle with salt. Bake for approximately 25 minutes. After the ribs are golden brown, remove from oven.
Baste with pure maple syrup.
Lower the oven temperature to 250 degrees.
Tightly wrap the ribs with foil.
Make sure not to put any holes in the foil in order to maintain moisture and flavor.
Return to the oven for approximately ten hours.
When you open the foil to check the ribs (carefully avoid the steam),
You should be able to place a fork into the meat and it should immediately fall off the bone.
If there is any resistance or hardness, continue cooking in the oven for up to two hours longer.
After cooking is complete, coat with another layer of maple syrup.
If not serving immediately, wrap in plastic to keep moist until ready to use.
To serve, cut each rack in half.