Combine all the Lemon Mayo ingredients in a bowl, season and set aside
Combine cornflour, salt, chilli flakes, 5-spice powder, white pepper and black pepper in a large snap-lock bag
Add pork to the bag and toss until the pork is lightly coated with the spice mixture
Half fill a medium saucepan with the oil and heat over a medium heat
When the oil is hot deep-fry the pork in small batches until golden and crisp
To test if the oil is hot enough sprinkle a few breadcrumbs into the hot oil and if they sizzle and rise to the top the oil is ready for deep-frying
Using a slotted spoon transfer the pork to a large tray lined with paper towl
Serve pork with lemon mayo and lemon wedges