You can clean stainless steel with everything from baking soda and lemon to toothpaste, and these options will all offer similar results. In fact, anything that is slightly acidic and abrasive should do the trick, so it’s always a good idea to work with what you have in the pantry before heading out to buy any new cleaning products.
Ultimately, what you need to use will depend on the state of your stainless steel sink. If it’s a new sink that’s barely been used, you should be able to get away with cleaning it every day with just dish soap and water. But if your stainless steel sink is older and needs some serious TLC, it’s best to opt for a deeper clean using acidic products such as vinegar, lemon, or cream of tartar.