Cook the pasta

• Cook the pasta according to the package instructions.
• Drain and rinse with cold water to stop the cooking and cool it down.

Prepare the vegetables

• Finely dice the cucumber, tomato and onion.
• Add them to a large mixing bowl with the sweetcorn and chopped parsley.

Add the tuna

• Drain the tuna and add it to the bowl with the vegetables.

Make the sauce

• In a separate bowl, mix the mayonnaise, Greek-style yoghurt, vinegar, lemon juice, salt and mustard until smooth and well combined.

Combine and mix

• Pour the sauce over the pasta salad mixture.
• Sprinkle with chilli flakes and black pepper.
• Mix everything very well until the pasta and vegetables are evenly coated.

Serve

• Serve the salad with crackers, or chill for a few hours to let the flavours meld.