Egg Mayo Sandwich

Ingredients

For the Creamy Egg Mayo Filling

• 8 large eggs , straight from the refrigerator (cold eggs peel more cleanly when added to boiling water)
• 1/3 cup (75g) full-fat mayonnaise (Japanese Kewpie mayo or classic whole-egg mayo gives the richest flavor)
• 1 tablespoon Greek yogurt or sour cream (adds a subtle tang and lightens the texture without making it runny)
• 1 1/2 teaspoons Dijon mustard (or 1 teaspoon yellow mustard for a milder, classic diner flavor)
• 1/2 teaspoon fresh lemon juice (brightens the richness of the yolks)
• 2 tablespoons fresh chives , finely snipped (or finely minced green onion tops)
• 1/2 teaspoon kosher salt (plus more to taste)
• 1/4 teaspoon freshly cracked black pepper
• Pinch of smoked paprika or cayenne pepper (optional, for subtle warmth and color)

For Assembly

• 8 slices thick-cut soft sandwich bread (brioche, Japanese milk bread, classic white, or soft whole wheat)
• 2 tablespoons unsalted butter , softened to room temperature (acts as a moisture barrier so the bread never gets soggy)
• 1 cup crisp baby spinach, watercress, or butter lettuce leaves (optional, for fresh crunch)

Instructions

1. Boil the Eggs to Perfection (Medium-High Heat Intensity)

1. Fill a medium saucepan with enough water to submerge the eggs by at least 1 inch, and bring it to a gentle rolling boil over medium-high heat . Carefully lower the cold eggs into the boiling water using a slotted spoon so they do not crack against the bottom of the pan. Reduce the heat slightly to maintain a steady simmer and cook for exactly 9 minutes 30 seconds for tender, fully set yolks that remain vibrant yellow and creamy rather than chalky or gray-rimmed.

2. Shock in an Ice Bath

1. While the eggs cook, prepare a large bowl filled with cold water and a generous handful of ice cubes. As soon as the timer goes off, transfer the eggs immediately into the ice bath using your slotted spoon. Let them chill for at least 5 to 7 minutes . Rapidly cooling the eggs stops residual cooking and causes the egg membrane to pull away from the shell, making peeling effortless.

3. Peel and Separate Texture

1. Gently tap each cooled egg all over against the counter to create fine cracks, then peel under a thin stream of cool running water. Pat the peeled eggs dry with a clean paper towel so excess water does not dilute your dressing. Slice the eggs in half and pop the yolks into a medium mixing bowl. Place the egg whites on a cutting board and dice them into small, uniform 1/4-inch pieces.

4. Build the Velvety Dressing

1. Add the mayonnaise, Greek yogurt, Dijon mustard, fresh lemon juice, kosher salt, black pepper, and optional paprika directly into the bowl with the egg yolks. Use a fork to mash the yolks together with the wet ingredients until you have a completely smooth, lump-free golden paste. Mashing the yolks into the mayo creates an ultra-luxurious emulsion that coats every piece of egg white evenly.

5. Fold in Egg Whites and Herbs

1. Add the diced egg whites and finely snipped fresh chives into the creamy yolk mixture. Gently fold everything together with a rubber spatula until well combined. Taste a small spoonful and adjust the salt, black pepper, or lemon juice if needed.

6. Butter the Bread and Assemble

1. Lay the 8 slices of bread flat on a clean work surface. Spread a thin, even layer of softened butter across one side of every slice, going all the way to the edges. This thin butter barrier prevents moisture from the egg salad from soaking into the bread, keeping your sandwich fresh for hours.
2. Divide the egg mayo filling evenly across 4 slices of bread, spreading it right out to the corners so every bite has plenty of filling. Top with a few crisp leaves of butter lettuce or watercress if using, then place the remaining 4 slices of bread buttered-side down on top. Press gently, trim the crusts if you want classic afternoon tea finger sandwiches, and slice diagonally into halves or triangles.

Nutrition

Calories: 435 kcal 22% · Protein: 19g 38% · Fat: 26g 33% · Carbohydrates: 30g 11% Dietary · Saturated Fat: 7.5g 38% · Fiber: 2g 7% · Sugar: 4g — · Sodium: 640mg 28%