<ol><li>Combine spices for blackened seasoning in a mortar or use a spice grinder. Grind into a blended powder and transfer to a well-sealed jar.</li><li>Preheat broiler and place a rack approximately 3" from the broiler.</li><li>To make okra, bring about 6 cups of water to a boil over high heat. Add salt, then okra. Blanch okra for one minute , drain, and transfer to a bowl. Add oil and 3 tablespoons of blackened seasoning. Toss until okra is well coated.</li><li>Spread okra out on a baking tray and broil until okra is browning and starting to crisp, 3-4 minutes per side.</li></ol>