Step 1: In a bowl, whisk together the mayonnaise, sour cream, Sriracha, lime juice, chicken stock, salt, pepper and sugar until smooth.
Step 2: Heat a large frying pan over a medium heat. Add the sweetcorn and pour over the sauce mixture. Cook for 4–5 minutes, stirring regularly until heated through.
Step 3: Stir in the grated Mexicana Bar and continue cooking until the cheese has melted into the sauce.
Step 4: Spoon into a serving bowl and finish with fresh coriander, a sprinkle of chilli powder and a drizzle of chilli oil, if desired.
Serve immediately.