Prep the chicken and veggies: Pat the chicken thighs dry and season lightly with salt and pepper. Cut into bite-sized pieces. Prepare the onions, carrots, potatoes, garlic, and ginger. This mise en place makes everything smooth sailing.

Sauté the aromatics (build the base flavor): Heat the oil and butter in a large heavy pot or Dutch oven over medium heat. Add the sliced onions and cook, stirring occasionally, for 8-10 minutes until they soften and turn golden brown (don’t rush this—caramelized onions are the soul of Japanese curry). Add the garlic and ginger; sauté for 1 minute until fragrant.

Brown the chicken: Push the onions to one side and add the chicken pieces in a single layer. Cook for 3-4 minutes, until lightly browned on all sides (it doesn’t need to be cooked through yet). This locks in juices.

Make the roux with your curry powder: Sprinkle the flour and Japanese Oriental Curry Powder evenly over the chicken and onions. Stir constantly for 1-2 minutes to cook out the raw flour taste and let the spices bloom. The mixture will look like a thick paste—this is your homemade roux base and where the magic happens!

Build the sauce: Gradually pour in the chicken broth (or water) while stirring vigorously to prevent lumps. Scrape up any browned bits from the bottom of the pot (that’s flavor!). Add the carrots and potatoes. Bring to a gentle boil, then reduce to a simmer.

Simmer to perfection: Cover partially and simmer for about 20 minutes, stirring occasionally, until the potatoes and carrots are tender and the chicken is fully cooked (internal temp 165°F/74°C). The sauce will thicken nicely as the veggies release starches.

Stir in the soy sauce, honey/mirin, and ketchup plus the freshly grated apple. Taste and adjust with more curry powder, salt, or a pinch of sugar if needed. If the sauce is too thick, add a splash of broth; if too thin, simmer uncovered a few more minutes. Turn off the heat and let it rest 5 minutes—the flavors meld beautifully.

Serve it up: Ladle the curry generously over fluffy steamed rice. Garnish with a sprinkle of chopped green onions or pickled red ginger if you like. Leftovers taste even better the next day!