Cajun sauce
• Put mayonnaise, sour cream, ketchup, and Cajun seasoning in a bowl. Whisk together and set aside while preparing the shrimp.
Cajun Crunchy Shrimp
• Put the flour, salt, lemon zest and Cajun seasoning in a bowl. Stir with a fork to mix it evenly. Next, break an egg into a bowl, add milk, and beat with a fork. Next, place the panko on a plate. Set up the stations in a line that starts with flour, then eggs, then panko. When finished, place a clean plate at the end of the shrimp assembly line.
• With your left hand we nudge shrimp in flour. Transfer it to your right hand and dip in eggs, then panko. Press the panko in the shrimp until it is evenly covered. Put the shrimp on a clean plate ; repeat with rest shrimp. Keeping one hand dry will help reduce stickiness and make the rusk baking process more efficient.