Nov 3, 2025

Komatsuna Katsuobushi Onigiri (Rice Balls With Japanese mustard spinach and Bonito Flakes)

What do you usually snack on when feeling a wee bit hungry? Perhaps potato chips or few cookies, or even a small piece of cake? Well, I do munch on these delicious things once a while too, but recently I've also switched my attention to onigiri Japanese rice balls.


It's healthier I think, at least compared to fried chips or sweet stuff. Also with the right ingredients, onigiri can give you just enough energy and nutrition without loading up too much calories.


Komatsuna katsuobushi onigiri (Rice balls with Japanese mustard spinach and bonito flakes) - 


Komatsuna katsuobushi onigiri (Rice balls with Japanese mustard spinach and bonito flakes)


Ingredients (about 4)?

  • 4 portions steamed white rice
  • 4 stalks or 120 grams komatsuna Japanese mustard spinach
  • 1 cup or 100 grams katsuobushi bonito flakes
  • 1 tablespoons toasted white sesame seeds
  • 1/2 teaspoon salt
  • Some sesame oil


How?

Cook the rice first, once done, fluff the grains and let cool till ok to handle by hand.


Have a big bowl ready and wipe the inside with some sesame oil. Just a thin layer to prevent sticking later on.


Komatsuna, or the Japanese mustard spinach, destem them. Bring a medium pot of water to a boil then add in the Japanese mustard spinach. It'll only take 30 seconds to a minute. 


Quick boiling the komatsuna, or the Japanese mustard spinach

Once ready, drain and let cool a bit, then  squeeze really hard to get rid of any moisture from the leafy greens. 


Drain and squeezed out any liquid from the boiled komatsuna Japanese mustard spinach

After that, chop the Japanese mustard spinach and add to the oiled bowl. Also add 4 portions of cooked rice along with 1 loosely packed cup of katsuobushi, 1 tablespoon of toasted white sesame seeds, 1 tablespoon of sesame oil, and 1/2 teaspoon of salt. Lightly mix these ingredients till evenly blended.


Mixed rice with ingredients for komatsuna katsuobushi onigiri

Portion out the rice mixture to four equal parts, then form each one into individual onigiri rice ball.


Komatsuna katsuobushi onigiri (Rice balls with Japanese mustard spinach and bonito flakes)

You can either scoop the rice to the center of a sheet of cling foil, then grab the four ends of the foil and squeeze the ingredients into a ball, that's what I did actually.


Komatsuna katsuobushi onigiri (Rice balls with Japanese mustard spinach and bonito flakes)

Or you can lightly wet or grease both palms, and shape the ingredients with your bare hands. Ball shape or triangle shape, you decide. You can even wrap the rice ball with a sheet of nori if desired.


Komatsuna katsuobushi onigiri (Rice balls with Japanese mustard spinach and bonito flakes)

One last tip, when cooking the rice for onigiri, I personally think it's better to use a bit less than usual amount of water for the grains. That way you'll get a bouncier rice in the end. And that slightly "al dente" bite works really good for rice balls.


Other onigiri recipes:


Oct 28, 2025

Pasta all'Ortolana (Healthy Pasta with Lots of Vegetables)

It's a pasta recipe with lots of vegetables, as healthy as it is, but do you know that another key element lies on Parmigiano Reggiano rinds?


That's right, the tough and sometimes being leftout cheese rinds. So next time when you have some leftover cheese rinds, especially the good aged Parmigiano Reggiano rinds, please do treat them with some respect. The Parmigiano Reggiano rinds can still contribute by adding extra savory depth to the dishes you make, especially in a braise, a stew, or even soup recipes.


Pasta all'Ortolana - 


Pasta all'Ortolana


Ingredients (about 5 portions)?

  • 1 pack/500 grams short pasta 
  • 1 eggplant
  • 300 grams cherry tomatoes
  • 1 medium zucchini
  • 1 yellow bell pepper
  • 1 bundle/30 grams basil
  • 1 big bulb shallot (about 1/3 cup peeled and sliced)
  • 2 garlic cloves
  • 1 small chunk aged Parmigiano Reggiano
  • 1 tablespoon tomato paste
  • 1 teaspoon dried oregano
  • 1 teaspoon red chili flakes (optional)
  • 1 cup pasta water
  • Some salt
  • Some extra virgin olive oil


How?

Peel and slice the shallot, we will need about 1/3 cup once peeled and sliced. Peel and slice the garlic cloves.


Destem and cube the eggplant. Destem, remove the pith and seeds, and cube the yellow bell pepper. Destem and cube the zucchini. Save some fresh basil leaves for garnish in the end and chop the rest. Halve the cherry tomatoes.


Chopped colorful vegetables for pasta all'ortolana

Prepare a big pot of water and bring to a boil. Sprinkle few pinches of salt and add in the pasta. I used calamarata pasta this time, but any type of short pasta works such as penne or casarecce.


Cook till the pasta turns almost al dente. Scoop some pasta water out and save for later. Drain the remaining liquid.


While cooking the pasta, prepare a big pot and drizzle about 3 tablespoons of extra virgin olive oil. Switch to medium heat and wait till the temperature gets hot. Add in cubed eggplant, yellow bell pepper, and zucchini. Give it a quick sear, stir once a while too.


Cooking cubed vegetables first for pasta all'ortolana

Season with 1 teaspoon of salt and 1 teaspoon of dried oregano. Also add 1 teaspoon of red chili flakes if desired. Give it a quick mix. Doesn't need to cook for long. Scoop everything out and set aside for now.


Still using the same pot, drizzle 2 more tablespoons of extra virgin olive oil and keep at a medium heat. Once warm enough, add in halved cherry tomatoes along with shallot slices and garlic slices. Cook till cherry tomatoes softened. Mix in 1 tablespoon of tomato paste, mix till blended and cook for another 30 seconds or so.


Cooking down halved cherry tomatoes

Add in chopped basil along with about 1 cup of pasta water and 1 square of the aged Parmigiano Reggiano cheese rind. Let the whole thing cook for about 5 minutes.


Using aged Parmigiano Reggiano cheese rind for pasta sauce

Time to transfer seared vegetables back to the pot. Also season with more salt during this step too, about 1 teaspoon. Mix and cook for couple more minutes. 


Colorful vegetable base for pasta all'ortolana

Remove the cheese rind and add in drained pasta. Toss to blend, cook for another minute.


Taste and add more seasonings if needed. Once checked, drizzle some more extra virgin olive oil all around and toss towards the end.


Plate and grate some aged Parmigiano Reggiano over. Garnish with whole basil leaves saved in the beginning.


Pasta all'ortolana

Besides utilizing cheese rinds in stew-like dishes, I know that some people also fry the rinds. The end result is puffed up and crispy bites to munch on. That I haven't tried. Seems like a fun thing to do but probably going to make some mess in the kitchen though.


Knowing the risk of oil splashing everywhere, I'm still up for the challenge. Just let me move everything out of the way from the frying pot first.


Other healthy pasta recipes: