Summarize the following:
Mix a cup (240 mL) of baking soda in a cup of warm water. Stir them together to form a paste. Apply the paste to the stain using your cloth or sponge. Wait for the paste to dry. Take a clean, dry cloth and use it to wipe off the paste. Check to see if the stain has been removed. Mix an equal amount of vinegar and warm water. Add them to a spray bottle if possible, since this will allow you to coat the stain with an even, controlled amount of the mixture. Spray the mixture onto the stain. After five minutes, come back and prepare to finish treating the backsplash with a general wash.. Dampen a soft cloth in warm water. Rub the cloth against the metal’s grain over the stained areas. Make sure all vinegar is removed. Finish up by using a soft cloth to remove the water. Make sure no water is left or else it can damage the backsplash.

Summary:
Combine baking soda and warm water in a bowl. Let the baking soda paste dry on the stain. Combine vinegar and water in a spray bottle. Let the vinegar mixture sit on the stain for five minutes. Wipe off the vinegar with a damp cloth. Dry the backsplash with a clean cloth.