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Imo kenpi

芋けんぴ (imo kenpi): crunchy fried sweet potato sticks in a crackly sugar glaze

Kagoshima, at Kyushu's southern tip, is Japan's sweet potato heartland. The crop is so closely tied to the region that the Japanese word for sweet potato, satsuma-imo, means 'Satsuma potato', after the old name of Kagoshima. Imo kenpi are its simplest snack: thin batons of sweet potato fried until crisp, then tossed in a syrup that sets into a glassy shell. Kids grab them from bags at the corner shop, and grandparents make them at home with the autumn harvest. They are crunchy, sweet and a little salty. Chef's tip: fry the potato twice, slowly first, then hot. That drives out the water and gives a snap that lasts for days.
Total time
40 min
Difficulty
easy
Serves
4
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Ingredients

Serves4

Method

0/6 done
  1. Step 1: Soak the 14 oz sweet potato, ideally Japanese satsuma-imo sticks in cold water for 15 minutes to rinse off surface starch. Drain and dry very well with a tea towel: water makes the oil spit.

    15 min
  2. Step 2: Put the sticks in a deep pan and pour in vegetable oil to cover them by 2 cm, starting with cold oil. Heat over medium heat. When the oil starts to bubble around the sticks, lower to medium-low and fry for 10 minutes, stirring now and then, until they float and feel firm.

    12 min
  3. Step 3: Turn the heat to medium-high and fry for 2–3 minutes more, until golden and the bubbling turns quiet and fine, which shows the water has gone. Lift out onto a rack.

    3 min
  4. Step 4: Common mistake: frying them hot from the start. The outside browns before the inside dries out, so they soften within an hour.

  5. Step 5: In a clean frying pan, heat 2 ⅛ oz sugar, 2 tbsp water and 1 pinch salt over medium heat without stirring for 2–3 minutes, until the syrup bubbles with large, slow bubbles and begins to look thick, just before it colours.

    3 min
  6. Step 6: Turn off the heat, add the fried sticks and 1 tsp black sesame seeds and toss quickly until coated. Spread on baking paper, separating them, and leave for 15 minutes until the glaze sets hard and white-glassy. Store in an airtight jar for up to a week.

Nutrition per serving

Calories
260 kcal
Protein
2 g
Carbs
45 g
Fat
9 g
Fibre
4 g

Nutrition values are estimates.

K
Recipe by

KrazyBadal

All recipes by this chef →

Good to know

How long does imo kenpi take?
About 40 minutes in total: 20 minutes to prepare and 20 minutes to cook.
How many people does it serve?
4 as written. Change the servings above the ingredients and every amount scales to match.
Is it vegan?
Yes. It has no meat, fish, dairy or eggs.
Is it gluten free?
Yes, as written. Check the labels on stock, sauces and spice mixes, which sometimes contain gluten.
What can I use instead of sweet potato, ideally japanese satsuma-imo?
Sweet potato, same weight (sweeter, cooks a little faster).
What can I use instead of sugar?
Caster sugar, same amount.

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