Hard Boil Eggs: Set a large pot of water to high and bring to a boil. Add eggs and return to a boil and then set a timer for 11 minutes. Once done, don't drain, but instead remove eggs with a slotted spoon and add to a bowl. Add ice and cold water to the bowl of eggs to stop the cooking process.
Cook Potatoes: Use the same pot and water you used for the eggs and add the potatoes and turn back to high, bring to a boil, and set a timer for 10 minutes. Boil until potatoes are fork tender, but not too soft.
Prep Mayonnaise and Veggies: While the water is coming to a boil and eggs and potatoes are boiling, chop your celery and onion and prep the mayonnaise. Add mayonnaise to a small bowl, add spices, and mix well and set aside.
Cool Potatoes: Once potatoes are done, drain and then add to a bowl. Let cool on the counter for 10 minutes and then cover and add the bowl to the fridge and cool for another 45-50 minutes.
Prep Salad: Once eggs and potatoes are cooled, chop eggs and add to a large bowl with potatoes, celery, onion, and mayonnaise. Mix well and serve!