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Japanese curry using roux thumbnail

Japanese Curry Using Roux Cubes (Including Lots of Secret Tips)

  • Author: Yuto Omura
  • Total Time: 1 hour 30 minutes
  • Yield: 6 Portions 1x


How to Make Japanese Curry Using Roux Cubes (Including secret ingredients to add depth of flavour and complexity)



Caramelized Onions

  • 1.5 - 2 Onions
  • 1 tbsp Olive oil
  • 1 pinch Salt


  • 250g (½lb) Meat of your choice (Beef, Chicken, Pork)
  • 1 tbsp unsalted butter
  • 2 cloves Garlic
  • 1 Carrot
  • 2 - 3 Medium Potatoes
  • 1/2 a Box of Japanese Curry Roux (approx 100g)
  • 700 - 900ml Water (This is an average, check the box for exact measurements)
  • 6 bowls Cooked White Rice
  • Any of the secret ingredients you like


Caramelizing the onions

(If you don't want caramelized onion then skip these steps and cook the onion straight in the pot for 5-10 mins before adding the meat.)

  1. Cut the onion into slices.
    Cut onion into thick slices
  2. Heat a pan on medium with 1 tbsp olive oil.
    add oil to the pan
  3. Add the onions and cook for 10 minutes, stirring occasionally so that they don't burn.
    frying onions
  4. After 10 minutes, sprinkle with salt and mix.
  5. Lower the heat and cook for another 30 minutes, stir every few minutes prevent burning. (If the onions stick to the pan, add a bit of water to help unstick them.)
    caramelized onions
  6. While they're cooking, prepare the rest of the ingredients.


  1. First, cut your meat into bite size pieces.
    cut the beef into chunky pieces
  2. Peel the potato and carrot, cut them into large pieces. Try not to cut them too small otherwise they will fall apart during the cooking process.
    cut carrotscut potato
  3. Heat a large pot on medium and add 1 tbsp butter and 2 cloves of crushed garlic.
    garlic and butter in the pot
  4. Once the butter is melted and the garlic is fragrant, add the meat to the pan and sprinkle with a pinch of salt. Brown the outsides to seal in the juices.
    brown the meat
  5. Add all of the carrot and potato to the pot. Cook together for a few minutes.
    cook the carrot and potato for a few mins
  6. Add the caramelized onion to the pot and stir.
    add the caramelized onions
  7. Next, pour in 700 - 900ml of water (depending on your roux) and bring it to the boil. (If you want to add red wine, swap 10% of the water for the wine. Example: 850ml water becomes 765ml and 85ml of wine. You can also add tomato puree etc here if desired.)
    add your chosen liquid to the pot (water, dashi, stock etc)
  8. Once it's boiling, turn the heat down to medium-low and simmer for 20 mins with the lid slightly ajar.
    set the lid ajar and simmer
  9. While you're waiting, check back from time to time and use a spoon to skim the foamy residue from the top of the simmering liquid. (If you want to add soy sauce, add it now)
    skim the foam
  10. After 20 mins, turn the heat down to low and add your Japanese curry roux.
    add the curry roux
  11. Mix in the roux and then simmer without the lid for 5-10 minutes. (Stir from time to time to make sure it doesn't get stuck to the bottom of the pan)
    allow the curry to thicken
  12. If it gets too thick, add more water (50ml-100ml at a time). If it's too thin, cook for longer.
  13. Optional: If you want to add chocolate or coffee powder you can add them now.
    you can coffee or chocolate at this point
  14. Once you reach your desired consistency, serve with white rice and enjoy!
    Japanese curry rice


Please refer to the roux packaging for exact roux and water measurements.

If you have leftover curry, let it cool down for 30 mins, put it in a microwavable container with a lid and store in the fridge for 2-3 days or up to one month in the freezer. (The potatoes don't freeze well so remove them before freezing.) Note that curry will stain plastic containers so it's recommended to use a glass container if you have one.

Leftovers can be reheated on the stove or in the microwave. It might be thicker the next day so add more water if necessary.

  • Prep Time: 10 mins
  • Cook Time: 1 hour 20 mins
  • Category: Mains
  • Method: Boil
  • Cuisine: Japanese

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