Make potato salad in the instant pot in just 5 minutes.
Add the diced potatoes to the Instant Pot. Nestle the eggs on top, then add water. Pressure cook.
Meanwhile, whisk together the mayo, mustard, salt, pepper, and pickle relish.
Once done, place the potatoes in a bowl. And pour the mayo dressing.
Stir in the chopped green onions and eggs. Then, chill before serving.