Ginger Beef Stir-Fry

Name: Ginger Beef Stir-Fry
Prep time: 15 min
Cook time: 10 min
Total time: 25 min
Cuisine: Asian
Ingredients: 1 tbsp toasted sesame oil by Sainsbury’s; 100g bunch spring onions by Sainsbury’s, trimmed and sliced; 1 red onion, thinly sliced; 2 x 250g packs microwaveable basmati rice by Sainsbury’s; 5 tbsp mirin by Sainsbury’s, or dry white wine or dry sherry; 2 tbsp light soy sauce by Sainsbury’s; 30g fresh ginger, peeled and cut into matchsticks; 200g green beans, trimmed and halved; 2 heads pak choi by Sainsbury’s, roughly shredded; 300g leftover roast beef, shredded