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Blocks of homemade Japanese curry roux to make curry rice

Japanese Curry Roux Blocks

Homemade Japanese curry roux that can be made ahead.  This makes about 6.5 ounces of curry roux---enough for 1 large batch of Japanese curry rice.  It can be made ahead of time and stored in the refrigerator for up to a week, or in the freezer for up to 3 months.

Author Rachael Hutchings, www.lafujimama.com


  • 1 inch piece fresh ginger, peeled and roughly chopped
  • 4 cloves garlic
  • 1/3 cup cornstarch
  • 2 tablespoons tomato paste
  • 2 tablespoons apricot jam (or peach jam)
  • 1 tablespoon unseasoned rice vinegar
  • 4 teaspoons curry powder
  • 2 teaspoons fine grain sea salt
  • 1 teaspoon onion powder


Make the curry roux:

  1. Put all of the ingredients into a food processor and process until it makes a smooth paste.  You can use the paste immediately, store it in the refrigerator for up to 1 week, or store it in the freezer for up to 3 months.

To freeze the curry roux:

  1. Transfer the curry roux into a silicone ice cube tray, or a loaf pan lined with parchment paper, or a freezer bag (extra air pressed out and paste "squished out" into a thin rectangle), and put it into the freezer to freeze.

  2. Once frozen, transfer to a freezer bag or airtight freezer container.  The curry roux will keep in the freezer for about 3 months.

To make curry using the blocks:

  1. -1 recipe curry roux

    -5 cups vegetable stock

    -2 yellow onions, 3 carrots, 2 large potatoes, chopped into bite-size pieces (or any other vegetables/protein you prefer)

  2. Put the curry roux in a large pot, along with 1 cup of the vegetable stock, over medium-high heat.  Break up/mash the roux in the vegetable stock and stir into the vegetable stock.  When it is combined, slowly whisk in the rest of the vegetable stock.  

  3. Add the chopped vegetables and stir to combine.  Bring it to a boil, then cover the pot, and reduce the heat to medium/medium-low (high enough to maintain a gentle simmer).  Let the vegetables simmer for 15 minutes, or until they are fork tender.  If the curry isn't thick enough, remove the lid and let simmer until the sauce reduces to the desired thickness.  Remove from the heat and serve over hot steamed Japanese rice.