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Japanese Curry Roux Recipe

4.9 from 105 reviews

This Japanese Curry Roux recipe creates a rich, flavorful base for authentic Japanese curry dishes. Made with butter, flour, curry powder, garam masala, and a hint of cayenne pepper, this roux adds depth and spice to your curry, ideal for customizing classic Japanese curry meals at home.

Ingredients

Scale

Roux Ingredients

  • 3.5 oz unsalted butter (7 Tbsp)
  • 3.5 oz all-purpose flour (about ¾ cup; use gluten-free flour for GF option)
  • 4 Tbsp Japanese curry powder (such as S&B Curry Powder)
  • 1 Tbsp garam masala
  • ½ tsp cayenne pepper (optional)

Instructions

  1. Prepare the ingredients: Measure out the butter, flour, Japanese curry powder, garam masala, and cayenne pepper to have everything ready for making the roux.
  2. Melt the butter: In a medium saucepan over medium-low heat, melt the unsalted butter slowly to avoid browning it too quickly.
  3. Add the flour: Gradually whisk in the all-purpose flour to the melted butter, stirring constantly to create a smooth paste without lumps. Continue to cook this mixture, stirring, for several minutes until the roux turns a light golden color.
  4. Add the spices: Stir in the Japanese curry powder, garam masala, and cayenne pepper (if using), blending thoroughly to incorporate the flavors evenly into the roux.
  5. Cook the roux: Continue cooking the roux over low heat while stirring regularly until fragrant and the mixture thickens slightly, which typically takes about 5–7 minutes. Be careful not to burn the roux.
  6. Cool and store: Remove the roux from heat and let it cool. You can use it immediately in your Japanese curry recipe or store it in an airtight container in the refrigerator for up to two weeks.

Notes

  • Garam masala can be substituted with other spice blends if unavailable, but it adds a key depth of flavor to the roux.
  • For a gluten-free version, use gluten-free flour or rice flour as a substitute for all-purpose flour.
  • The cayenne pepper is optional and can be adjusted to your preferred level of heat.

Keywords: Japanese curry roux, curry base, curry powder roux, homemade Japanese curry, curry sauce base