These fermented buckwheat dumplings originate amid the mountains of Nagano Prefecture, Japan. Because of the cold climate and steep topography, wheat and buckwheat are much easier to grow here than rice. You can be flexible with the fillings and bean paste can be used if you wish to make a sweet version. I’ve chosen ingredients that are readily available in the UK. Oyaki make an excellent side dish or a light main meal.

(makes 12 dumplings)
For the dough
300g buckwheat or plain flour
200ml boiling water
1 tsp vegetable oil
¼ tsp salt
For the butternut squash filling
1/2 butternut squash, small cubes
½ tsp minced garlic
½ tbsp toasted sesame oil
1 tbsp light soy sauce
For the aubergine filling
1 aubergine, small cubes
1 tsp mirin
1 tsp rice wine vinegar
1 tbsp light soy sauce
1. Mix the flour, water, and vegetable oil in a bowl with
a spoon. When it starts to come together use your hands
to knead the dough for 3 minutes then set aside for at
least 30 minutes.
2. Chop the aubergine and fry in vegetable oil, covering
the pan so that the moisture is retained. When the
aubergine begins to soften add the mirin, rice wine
vinegar and soy sauce. When the aubergine has fully
softened take off the heat and set aside.
3. Using the same pan fry the chopped butternut squash,
adding more oil if necessary. When beginning to soften
add the garlic, sesame oil and soy sauce. Remove from
the heat and set aside when cooked.
4. Roll the dough into a cylinder, divide into
quarters and then cut each quarter into three so
that you’ve 12 separate pieces.
5. Roll each piece into a ball then flatten into a
disc of about 10cm. Squeeze the edges so that they’re
thinner than the centre.
6. Spoon each mixture into separate discs, folding over
and pinching together the edges so that the oyaki is
sealed.
7. Fry the oyaki in batches, beginning with the sealed
side down and then flipping over once the underside
begins to brown. Remove when both sides are browned.
8. In batches, place the oyaki onto a wire mesh and then
steam over a pan or slow cooker. Be sure to place a lid
over the pan/cooker. Steam for about 15 minutes, there’s
no need to turn over during this time.
9. Remove the oyaki and allow to cool a little on a wire
rack. While still hot serve with soy sauce to dip into, and
chopped spring onions as a garnish.