The Tamago Sando- Japanese Egg Salad Sandwich was so enjoyable when we visited Tokyo, Japan this month so that I recreated it again when we got back to America. This the kind of sandwich that is a welcome, refreshing change to lunch or snacks and so ideal for the warm summer months. It's easy and quick to put together. I used the tangy, slightly salty Japanese mayonnaise for this recipe but feel free to use regular American mayo if it's more convenient. This was inspired by a recipe from Just One Cookbook by Namiko Chen. Makes two sandwiches.