Food

Thursday 2 April 2026

Citrus kosho

Ingredients

jalapeno or other large green chillies

8

oranges

10-12

sea salt

This is my take on yuzu kosho, a Japanese seasoning that’s become popular over the last few years. Regular oranges or even mandarin peels will work perfectly well here. Leaving the jar at room temperature for a couple of days allows the kosho to start fermenting, which adds complexity to the flavour. It’s brilliant sprinkled on raw or cooked fish, grilled meat and rice dishes.

Serves

200g

| Time

15 mins

jalapeno or other large green chillies

8

oranges

10-12

sea salt

Serves

200g

| Time

15 mins

Method

Before you start, a note that the basic formula here is 80:20 chilli to citrus zest, so adjust the weight as you go according to the instructions below.

Remove the stalks and deseed the chillies. Scrub the oranges well under a hot tap to remove any wax.

Finely chop the chillies, then weigh them – I had around 160g, meaning I added around 40g of citrus zest. Check the total weight of your chillies and zest, then add 2% of the total weight in sea salt. Transfer everything to a pestle and mortar and mash to a coarse paste.

Transfer to a sterilised jar leaving a little room at the top, and allow to sit at room temperature for a few days. Stir each day to prevent mould, then transfer to the fridge. The kosho will keep for a couple of months.

Ingredients

jalapeno or other large green chillies

8

oranges

10-12

sea salt

Method

Before you start, a note that the basic formula here is 80:20 chilli to citrus zest, so adjust the weight as you go according to the instructions below.

Remove the stalks and deseed the chillies. Scrub the oranges well under a hot tap to remove any wax.

Finely chop the chillies, then weigh them – I had around 160g, meaning I added around 40g of citrus zest. Check the total weight of your chillies and zest, then add 2% of the total weight in sea salt. Transfer everything to a pestle and mortar and mash to a coarse paste.

Transfer to a sterilised jar leaving a little room at the top, and allow to sit at room temperature for a few days. Stir each day to prevent mould, then transfer to the fridge. The kosho will keep for a couple of months.

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