Dice Eggs. To start, dice or slice boiled eggs into small pieces. (I like using an egg slicer to speed things along.)
Combine. In a medium bowl, combine diced eggs, mayonnaise, mustard, pickles, pickle brine, and a pinch of salt and pepper. Stir to combine well.
Taste and Adjust, adding more salt, pepper, or pickle brine as desired. Garnish with chives, fresh herbs, etc., as desired.
Serve & Store. Enjoy right away on bread, toast, crackers, lettuce wraps, cucumber slices, and more. Or, store egg salad mixture in an airtight container up to 3 days. Keep in mind that egg salad should be refrigerated as much as possible. Do not keep egg salad out at room temperature longer than 2 hours (or 90 minutes on a warm day!).