Jamaican curry powder is a specific blend of spices used in Jamaican cuisine. You can typically find it in well-stocked grocery stores, international markets, or online. I buy the most authentic curry powders on Amazon. I like using Betamac Curry Powder or Chief Curry Powder. If you can't find it, you can make your own by blending spices like turmeric, cumin, coriander, and allspice.