Chocolate. I don't want chips in it, nuts in it, anything. Just plain, boring chocolate. Maybe some chocolate syrup on it for a special occasion. Milk and chocolate ice cream are the only dairy products I consume. Not lactose intolerant, just don't care for anything else.
And those places that chop up your ice cream and mix things into it are disgusting. About 40 years ago, they opened an outpost of Steve's in West Philadelphia. People were abuzz. We check it out. They spread someone's order on a marble slab, chop up a bunch of candies or nuts and mix them all together. They put the conglomerate in a bowl and wipe the slab with a dingy towel, and do the same for the next customer. Who knows how long that towel was in use. I had a hard time convincing them I didn't want anything mixed in mine 😄