Care and cleaning of zinc is a complicated conversation. Start with the terms: patina, aging, distressed, mottled. It's a unique language, but let's focus on two important concepts: "clean" and "polished."
We hear this question daily and we have a wide variety of answers because it is all based on how you use it and where it is installed. An outdoor kitchen near an ocean will look a lot different than a climate-controlled, heavily used restaurant bar. Either way, be prepared for a dynamic finish that changes frequently.