With egg salad tucked between slices of soft and fluffy shokupan, this Japanese Egg Sandwich (Tamago Sando) offers a creamy, tangy, and savory flavor that makes for the perfect snack or lunch. Pressure-cooked eggs yield the ideal texture and blend beautifully with Kewpie mayo for a rich filling.
Place eggs in a saucepan and cover with water by about one inch.
Bring to a boil on medium heat, then simmer for 10 minutes.
Drain hot water and place eggs in an ice bath to cool completely.
Peel the eggs carefully.
Mash peeled eggs in a bowl using a fork or masher until mostly smooth with some small chunks.
Stir in sugar, kosher salt, pepper, milk, and Japanese Kewpie mayonnaise until well combined. Taste and adjust seasoning if needed.
Spread salted butter thinly on one side of each shokupan slice. Spread egg mixture on two slices, butter side up. Top with remaining slices, butter side down.
Optional: Trim crusts and cut sandwiches in halves for serving.
Notes
Store leftovers in an airtight container in the fridge for up to 1 day. For best texture, keep egg mixture separate and assemble before eating.