Curry roux is a pre-made concentrated curry u003cemu003edemi-glaceu003c/emu003e, dried out so that it is shelf stable. Think of it like a Japanese-style gravy, with lots of flavor and makes cooking so much easier! There are few top brands, but Su0026amp;B Golden Curry is probably the most widely available at supermarkets. You'll find it in the Asian foods section of the grocery store.u003cbr/u003eu003cbr/u003eYou can always make your own curry roux homemade but the ready-made roux is just as delicious, saves you about 30 minutes, and is actually what most home cooks in Japan use! In Japan it is common to use a store bought curry roux and just add seasonings and secret ingredients (like apple and honey) to make it their own.