Cut ribs to form individual portions; sprinkle with 1 teaspoon salt. Place ribs on a rack in a shallow baking pan; bake in preheated 375°F. oven until almost tender, 1 1/2 to 2 hours. Drain off fat. Meanwhile, dissolve bouillon cube in boiling water in a medium-size saucepan.

Add oil, pineapple, brown sugar, onion powder, garlic powder, Worcestershire sauce and remaining salt; bring to a boil. Reduce heat and simmer, uncovered, 5 minutes. Combine cornstarch with cold water in a small bowl; stir into sauce mixture. Cook and stir until thickened.

Spoon sauce over drained, baked ribs. Increase oven temperature to 425°F.; bake until nicely glazed, about 30 minutes.