To get filmy and light strands of egg, the soup should be simmering. If the soup’s at a hard boil, the egg gets scrambled and rubbery.
Sweet Corn and Crab Soup
Finely chopped hard-boiled egg makes this salad look like mimosa flowers, hence the name. Instead of chopping the egg, you can use a ricer if you have one. Keep the white and yolk separate for a particularly striking presentation.