Cajun seasoning method: 

1. In a small mixing bowl, combine all ingredients and whisk until thoroughly combined. 

French Fries method: 

1. Heat your vegetable oil in a 6-8 quart heavy-bottomed pot or Dutch oven to 350°F (176°C). Once your oil is at temperature, using a large stainless steel slotted spoon or spider, gently lower your French fries into the hot oil in 2-3 batches and fry until the bubbling has subsided and they are golden and crisp, about 2-4 minutes. 
2. For each batch, remove fries from the oil using your slotted spoon or spider skimmer, allowing excess oil to drain for a few seconds before adding to a large heat-proof bowl and immediately seasoning to taste with your Cajun seasoning. Be cautious of the seasoning level as some frozen fries come more salty than others, be sure to taste your finished fried fries before seasoning.  Drain onto a wire rack-lined baking tray. Repeat with the rest of your fries and serve immediately.