Black Pepper Kettle Corn

In a large nonstick saucepan, heat the canola oil with the popping corn over moderately high heat until sizzling. Add the sugar, flaxseeds, salt and pepper, cover and cook, shaking the pan constantly, until nearly all of the kernels are popped, 5 to 6 minutes. Pour the kettle corn onto a rimmed baking sheet and let cool, tossing once or twice. Transfer the kettle corn to a bowl, leaving any unpopped kernels behind. The kettle corn can be made up to 4 hours ahead.