[header] How to clean hammered aluminum [title] Use a gentle detergent on the aluminum. [step] Because aluminum is soft, choose a non-abrasive dish detergent such as dawn. Spread a squirt of the detergent over the aluminum, enough to use to scrub out stains. 
During regular use, hammered aluminum can be cleaned like any metal dishware. [substeps] Alternatives to dish detergent include an orange cleaner, lemon juice, or a degreaser such as dawn power dissolver.