Step 1

Combine hoisin sauce, vinegar, sugar and white pepper in a small bowl. Place mince and 1 tablespoon sauce mixture in a large bowl. Mix with a fork to combine.

Step 2

Combine vegetable oil and sesame oil in a small bowl. Heat a wok over high heat. Add half the oil mixture. Swirl to coat. Add half the beans. Stir-fry for 3 to 4 minutes or until bright green and beginning to char. Transfer to a bowl. Cover to keep warm. Repeat with remaining oil mixture and beans.

Step 3

Add a third of the chilli oil to wok. Swirl to coat. Add a third of the mince mixture. Stir-fry for 7 to 8 minutes or until browned. Transfer to a bowl. Cover to keep warm. Repeat with remaining chilli oil and mince in two batches.

Step 4

Return mince to wok. Add garlic, ginger and half the onion. Stir-fry for 1 minute or until fragrant. Add remaining sauce mixture and 2 tablespoons water. Stir-fry for 1 to 2 minutes or until mince is well coated and sticky. Return beans to wok. Stir-fry for 1 minute or until heated through. Serve topped with coriander and remaining onion.