Step 1

Bring a pot of water to a boil. Add eggs and boil 8 minutes. Transfer eggs to a bowl of ice water.

Step 2

Peel potatoes and cut into 1-inch pieces. Transfer to a pot, cover with cold salted water. Bring to a boil over medium-high heat and cook until tender but not falling apart, about 5 minutes. Drain and transfer to a mixing bowl.

Step 3

Quarter, core and thinly slice apple. Cube ham into ½-inch pieces. Peel eggs and crumble through a slotted spoon. Season with salt and pepper.

Step 4

Add apples, ham, vinegar, mayonnaise and half the eggs to potatoes. Use a rubber spatula to mix. Season with salt and pepper. Sprinkle on remaining eggs.