Most of us wash a mountain of dishes in the kitchen sink every day and then barely give the sink itself a second glance, until one morning it looks tired, spotty and faintly greasy, no matter how much you rinse it. The culprits are usually the same few things: food film, grease, and the chalky white marks left behind when hard water dries on the steel. The good news is that a stainless steel sink is surprisingly easy to bring back to life, and you rarely need anything beyond dish soap, baking soda and vinegar. Here’s a simple routine that works.