Sweet Potato Potato Salad

Step 1
Bring a large pot of salted water to a boil. Add white potatoes and sweet potato; cook in boiling water until a knife is easily inserted into the centers, about 30 minutes. Drain, cool, peel, and chop potatoes into bite-sized pieces.

Step 2
Place eggs in a saucepan and cover with cold water. Bring water to a boil. Cover, remove from heat, and let eggs stand in hot water until fully hard cooked, 10 to 12 minutes. Remove from hot water; cool, peel, and chop into bite-sized pieces.

Step 3
Combine potatoes, eggs, celery, and onion in a large serving bowl.

Step 4
Whisk together mayonnaise, mustard, pepper, and salt in a small bowl until well combined. Add to potato mixture and stir to coat. Refrigerate and serve chilled.