[header] How to make roasted potatoes on the grill [title] Rinse the potatoes under cold water to clean them. [step] Set the potatoes in a bowl or on a plate after you rinse them. [substeps] Any all-purpose potato can be roasted on the grill, like purple potatoes, blue potatoes, and yukon golds. 
If you want a potato that holds its shape during a roast, go with a waxy potato like a red-skinned or fingerling. Although it's not necessary, you can peel the potatoes after you rinse them if you'd prefer them without the skin.