Things You'll Need
Lemon juice or vinegar
The advantage of stainless steel is that it resists rust and tarnish -- but even stainless can discolor, especially if it's silver plated. The best method of cleaning tarnished stainless steel is with a chemical-free method, as the harsh chemical reactions often used to remove silver tarnish can corrode stainless steel. With a few items from your kitchen, you can clean your stainless-steel cake server in just a few minutes.
Put 1/4 cup of baking soda into a small bowl. Gradually add water -- 1/2 tsp. at a time -- until it makes a thick paste.
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Dip a corner of the microfiber cloth into the baking soda paste and rub on the cake server in a circular motion until the discoloration fades.
Rinse well under running water. If there is still a discoloration, rub more baking soda paste on the surface and rinse again. Wipe the cake server dry.
Dampen a clean corner of the microfiber cloth with lemon juice or vinegar. Rub the surface of the cake cutter lightly to shine and remove any streaks.
Stainless steel washed in a dishwasher or with dish-washing liquid can result in rainbow-colored streaking, which can be removed with lemon juice or vinegar in the same manner as above.
Do not soak stainless steel in vinegar or lemon juice, as it can cause discoloring.