Put the mixture in a spray bottle and spray the grout in between your floor tiles. Wait for the vinegar solution to stop bubbling and then scrub the grout with a scrub brush or toothbrush. Once the grout is clean, mop the tiles with water to get rid of any leftover vinegar solution.
1 Prick all over with a fork: Prick the potatoes in a few places with the tines of a fork. This allows steam to escape from the baking potato.  Bake the potatoes: You can bake the potatoes directly on the oven rack, or you can place them a few inches apart on a foil-lined baking sheet. Bake the potatoes for 50 to 60 minutes. Flip them over every 20 minutes or so and check them for doneness by piercing them with a fork.
Turn the burner on high and bring water to boiling. Reduce heat to medium low or low. Cover the pan with a lid. Cook the potatoes in gently boiling water until tender, about 15 minutes for cubed potatoes and new potatoes and 20 to 25 minutes for quartered potatoes. Drain the potatoes in a colander. Serving Boiled Potatoes