Nonsom / Bosou

Nonsom / Bosou, the Pickled Food of Sabah

Nonsom, also known as Bosou, is a popular traditional preserved dish of the Kadazandusun people, the largest indigenous group of Sabah. This unique delicacy is made by mixing raw fresh water fish and cooked rice, and pickle them by salt and pangi (a local herb commonly used as preservative). The mixture is then carefully stored in a glass or plastic container, allowing it to marinate for two weeks.

Nonsom / Bosou, the pickled food of Sabah
You can find Nonsom / Bosou easily in Tamu or local market of Sabah

Similar to other preserved traditional foods, Nonsom / Bosou has a distinctive salty and tangy flavor. It can be eaten raw or served with white rice and even fried noodles, but is more typically cooked with other meats and vegetables. To enhance its aroma, consider sautéing the Nonsom / Bosou with diced garlic, a sprinkle of pepper and olive oil.

Pangi fruit (Pangium edule)
Also known as Pangium edule or football fruit, the seeds of Pangi is a main ingredient in preserving and fermenting food in Sabah

However, pangi is not used in the preparation of bosou by the Murut, the third largest indigenous group in Sabah, Malaysia. Most of the Murut population lives in the hilly interior regions of the state.

I’ve tried raw Bosou Ikan (fermented fish) and Bosou Bakas (fermented wild boar) prepared by the Murut people from Pensiangan and Sapulot, respectively. The Bosou Ikan tastes like salty fish with a chewy texture and a slight fishy smell. The fish used are mainly freshwater species from nearby rivers.

For Bosou Bakas, it’s made from the wild boar they hunt in the forest, it’s also springy and a bit sour. They eat it with boiled taro. Actually both go quite well together, I like this starchy and meaty combination.

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5 thoughts on “Nonsom / Bosou, the Pickled Food of Sabah

  1. Oh, come on! It wouldn’t harm you to try it. It’s actually called ‘bosou’ by the Kadazan Dusun. I’ve been eating this since childhood and no harm done to the system, in fact we serve on kaamatan or bambarayon. You should try it.

  2. They should export this stuffs to our area in Tawau, I’ll try, it looks great to me. Great pictures taken!!

  3. They should export this stuffs to our area in Tawau, I’m sure most of Malay people will love it.
    I tried worst than this one. ummmmmmm…

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