First, find the largest yukon gold potatoes you can. You can also use Russets, although they are a bit more temperamental and want to fall apart if you overcook them even the littlest bit. Cook your potatoes on the second rack of your grill preheated to about 425F. You aren’t looking to completely cook them. You just want to get them started. These large ones took about 15 minutes. I did smaller ones and they only took 10 minutes.