Korean bao beef sliders

Name: Korean bao beef sliders
Prep time: 20 min
Cook time: 2 h 10 min
Total time: 2 h 10 min
Yield: 6 portions
Ingredients: extra virgin olive oil; 220 g milk; 60 g fresh baby spinach leaves; 70 g white sugar; 2 tsp dried instant yeast; 2 ½ tsp baking powder; 400 g plain flour; 1 pinch sea salt; 4 spring onions/shallots; 20 g extra virgin olive oil; 1 carrot; 40 g breadcrumbs; 2 egg yolks; 20 g soy sauce; 20 g chilli paste; 3 pinches ground black pepper; 10 g sesame oil; 10 g brown sugar; ¼ tsp ground ginger; 250 g pork mince; 250 g beef mince; 1 carrot; 1 capsicum; 1 spring onion/shallot; 150 g Chinese cabbage (wombok); 100 g mayonnaise; ¼ tsp Sriracha; 1 ½ tsp black sesame seeds; 1 ½ tsp white sesame seeds; 500 g boiling water