Spanish-Japanese Eggs

Today for brunch, I created a mash-up of two of my favorite egg dishes: Spanish tortilla, a thick omelet with potatoes, and Japanese tamagoyaki, a rolled omelet infused with a slightly sweet soy and dashi broth.

In place of regular potatoes, I use satsumaimo, a kind of Japanese sweet potato that is whiter and a bit firmer than American sweet potatoes. Of course, you can use whatever sweet potato you can find. I pre-cook the satsumaimo with a kind of delicate simmering technique called nimono before incorporating it into the omelet.

The recipe takes a bit of time to make from scratch, but the techniques are simple. I think it’s worth the effort and the perfect way to impress your family and friends with a fresh take on the usual weekend brunch fare.



  • 1 piece of kombu
  • 3 thin slices of fresh ginger
  • 4-5 dried shiitake (mushrooms)
  • 1 handful of katsuobushi (dried bonito flakes)
  • 1 satsumaimo (Japanese sweet potato), substitute the American kind if you can’t find the Japanese kind
  • 1 clove of garlic, thinly sliced
  • sesame oil
  • 8 medium organic eggs
  • 1 scallion, thinly sliced
  • yuzukoshō (a kind of Japanese fermented green chili and citrus peel paste)
  • soy sauce
  • mirin (sweet rice wine) and sake
  • extra virgin olive oil
  • sesame seeds
  • red chili flakes/cayenne pepper
  • pimentón (Spanish smoked paprika)
  • brown sugar, salt and pepper


1. Make Broth

  • Rinse the shiitake, kombu, and ginger and place in a medium saucepan with about a liter of cold water.
  • Bring to a simmer, and cook gently for 30 minutes, uncovered.
  • Pick out the kombu and mushrooms and reserve. Leave in the ginger.
  • Bring to a boil and toss in the katsuobushi. Turn off heat, let cool for 10 minutes and strain. Discard katsuobushi and ginger.
  • Add 2 tablespoons of soy sauce and sugar, 1 tablespoon each of mirin and sake. Add salt to taste. It should be salty and a bit sweet but not too overwhelming.


2. Prepare Satsumaimo

  • While the broth is simmering, cut the satsumaimo into 1/4 inch-thick half moons. Leave the skin on, but trim off any dried-out or dark bits.
  • Soak the satsumaimo slices in cold water until ready to use. This removes some of the extra starch and prevents oxidation, which turns the sweet potato brown.
  • Drain the satsumaimo slices from the cold water and simmer in the broth from the previous step for 15-20 minutes until soft but not falling apart. Remove satsumaimo from cooking liquid, reserving some of the broth.


3. Make Topping

  • While the satsumaimo is simmering in the broth, prepare the crunchy mushroom and kombu topping.
  • Thinly slice the kombu and shiitake reserved from the broth making.
  • Heat about a teaspoon of the sesame oil in a small saucepan. Add in the sliced kombu and shiitake along with the sliced garlic.
  • Season with a few pinches of red chili powder and/or cayenne, freshly grated black pepper and sugar. Add a small splash each of sake, mirin, and soy sauce.
  • Cook until liquid is absorbed and mixture looks dark and crunchy. Sprinkle on white sesame seeds.


4. Final Assembly

  • Whisk 1/4 teaspoon of yuzukoshō and the scallion in about 1/4 cup of the reserved simmering liquid. Beat in the eggs.
  • Heat a well-seasoned cast iron pan on a medium flame and coat with a thin layer of olive oil. Add the egg mixture, then add a layer of the satsumaimo slices. I had some extra sweet potato that I saved for another use. Then add the kombu and mushroom mixture on top.
  • Continue cooking on low heat until edges look slightly solid. Finish in the broiler (1-2 minutes). The eggs should still be a little runny in the center. Drizzle with olive oil, sprinkle with pimentón, and serve. Enjoy!


Jump! Retweeted by Clay Shirky

On Twitter this weekend:

cshirky: The New Yorker still runs cartoons of crazy people carrying placards. What do 25 y.o’s make of that? In their world, crazy people have blogs
8:07 AM Nov 15th

leesean: @cshirky 25ish y.o.’s like me make mashup/remixes of crazy people with placards and put them on YouTube
10:28 AM Nov 15th

cshirky: RT @leesean: @cshirky 25ish y.o.’s like me make mashup/remixes of crazy people with placards and put them on YouTube
1:14 PM Nov 15th

I created Jump (The Bailout Bash) with Elizabeth Fuller for a class at ITP last year (Communications Lab with Marianne Petit).

New track: NO2H8

Protest Against Prop 8

Listen to my latest musical composition, NO2H8, based on audio I recorded of speeches at the Protest Against Prop 8 this Sunday and some organ and synth tracks of “deconstructed” Mendelsohn’s Wedding March.

[MP3] [AIFF]