I tried to replicate the Japanese side dish a few times with butternut or calabeza squash, but they're both too watery and fine for the dish to work. Kabocha is so dense that it holds its texture super well.
I modified today's recipe from Lunch in a Box, who makes lots of really adorable bentos! I didn't have mirin or dashi on hand, but felt I could do without with a little genius. My kabocha came out super tasty.
Simmered Kabocha Pumpkin
Makes 6 side dish servings
1 kabocha squash (about 2 lbs)
2 tablespoons brown sugar
3 cardamom pods
1 large pinch red chile flakes
2 tablespoons light soy sauce
2 squares konbu (seaweed) totaling 6 square inches
3 coins ginger
2 cups water
- Wash the kabocha, scrubbing lightly. The skin is edible, so it needs to be nice and dirt free.
- Take a sharp vegetable peeler and cut stripes of the skin off of the kabocha. By making sure each piece has a little flesh exposed on the bottom, we boost the flavor!
- Using a large, heavy knife, like a cleaver or chef's knife, carefully cut the kabocha in half. This is a little more difficult than cutting a watermelon open - it will have a good amount of resistance, so be patient and CAREFUL.
- Scoop out the seeds and the stringy bits. Discard.
- Cut the kabocha into 1-2 inch cubes. Try to be uniform!
- In a large bowl, pour in a cup and a half of water, the soy sauce, and all the spices and seaweed. Mix gently.
- We need to cook the kabocha in a single layer. In a deep frying pan or pot, arrange the kabocha, skin side down in a single layer. I ran out of space and put some on top, but it meant I really had to make two batches.
- Pour the sugar/soy/water mix over the kabocha. Place over high heat. Cover with a pot lid that is smaller than the diameter of the frying pan, so that the lid pushes down on the squash and allows steam to escape from the sides (AKA a drop lid)
- When the liquid is at a roiling simmer, turn the heat down to a slow simmer. Cook for 20 minutes or until a fork goes easily through the squash.
- You may have to remove some squash and rotate around the not as well cooked pieces.
- Drain the remaining liquid and reserve (would be tasty if you turn the leftovers into mashed sweet kabocha!). Allow kabocha to cool.
- Om nom nom.