Pepperoncino (Bongo) onigiri
A home version inspired by the shop filling named above. The shops do not publish their recipes; these quantities are this site's own. This page makes one filling, then shapes and serves it. Start with plain cooked Japanese short-grain rice: rice cooking, hand shaping and all shop fillings →. The filling preparation time below excludes cooking the rice.

Step by step
Filling

Start the sliced garlic and olive oil together in a cold pan. 
Warm over low heat for 4–5 minutes until the garlic is pale gold; turn off the heat before adding chilli and salt. 1Pepperoncino oil
low~6 minFor this step
- Olive oil3 tbsp
- Garlic, thinly sliced3 cloves
- Chilli flakes½ tsp
- Salt (pepperoncino)a pinch
- Put the olive oil and garlic in a small cold pan and warm it over low heat until the garlic is pale gold, 4–5 minutes. Darker garlic turns bitter.
- Off the heat, add the chilli flakes and salt. Fold the oil and garlic through the rice before shaping, about 1 tsp per onigiri.

Should look like this Shape by hand

Fold about 1 tsp garlic-chilli oil through each rice portion; no central pocket. 2Shape them shop style
~2 min eachFor this step
- Cooked rice, from the onigiri page480–720 g (120 g each)
- Kosher salt (for your hands)a little for each onigiri
- Have the cooked rice ready, covered, and cool it only until comfortable to hold. Wet your hands and rub a little salt over both palms.
- Fold about 1 tsp of the prepared garlic-chilli oil, including some garlic, through each 120 g portion of warm rice. Make four to six portions. This oil batch makes more than you need; do not pour it all into the rice. There is no separate filling pocket.
- Cup the rice from below with one hand. Bend the other hand into a roof, press gently to make a corner, turn a third of a turn and repeat. Keep it loose: press only enough to hold together.

Should look like this Finish

3Wrap and serve
For this step
- Nori strips4–6
- Wrap one strip of nori around the base and up the sides just before serving. Eat within the hour while the nori is crisp. The sliced example shows the inside; cutting yours open is optional.
Based on: Hidden Japan Gems — Onigiri Bongo menu · MICHELIN Guide — Onigiri Asakusa Yadoroku · Asakusa Yadoroku (official) · Nigihaya, Kyoto (official, Japanese) · Togoshi-ya (official, Japanese)