Simmered Spinach and Koyadofu Recipe

Koyadofu (or shimidofu) is freeze dried tofu which is a good source of protein, iron, and calcium. It’s usually rehydrated before cooking. Rehydrated Koyadofu has a spongy texture when rehydrated and absorbs the flavors of dashi soup well. This is a traditional way of rehydrating koyadofu. Procedures may varies depending on kinds of koyadofu and a very popular recipe of Japan.


  • 4 small blocks, or 1 oz koyadofu, rehydrated and sliced into 1/6-inch thick
  • 1 bunch fresh spinach, washed and cut into 2-inch lengths
  • 4 inch negi, sliced diagonally into 1-inch pieces
  • 2 eggs
  • 1/2 cup dashi
  • 2 Tbsp soy sauce
  • 2 Tbsp mirin


  • Put dashi soup, soy sauce, and mirin in a large skillet and bring to a boil on medium heat.
  • Add koyadofu and negi in the soup and simmer for a few minutes on low heat.
  • Add spinach and simmer until softned. Beat eggs in a cup.
  • Pour the eggs over the ingredients. Cover the pan with a lid and cook for a minute. Stop the heat.

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