Start by placing 4 medium-sized eggs in a saucepan and cover them with cold water. Bring the water to a rolling boil over medium heat, then cover the pot and reduce the heat. Let the eggs simmer for 8-10 minutes until hard-boiled, then transfer them to a bowl of icy water for several minutes to cool, which will make peeling easier.

Once the eggs are cool to the touch, gently tap each egg on the counter and roll it to crack the shell. Peel off the shell under running water if necessary. Carefully slice the eggs in half, separating the egg whites from the yolks. Place the yolks in a mixing bowl and the whites on a cutting board for chopping.

Chop the egg whites into small, even pieces and set them aside. In the mixing bowl with the mashed yolks, add a generous scoop of mayonnaise, chopped coriander, salt, and black pepper. Use a fork to mix everything together until smooth and creamy, creating the delicious filling for your Egg Mayo Sandwich.

Lay out two slices of your choice of bread on a clean surface. Spread an ample amount of the egg mayo mixture evenly over one slice. Top it with the chopped egg whites for added texture. Place the second slice of bread on top, pressing down gently to secure the filling.

Using a sharp knife, cut the sandwich into halves or quarters, depending on your preference. Arrange the pieces on a plate and serve your classic Egg Mayo Sandwich fresh for the best taste.