Steamed Bao Buns, Pork Belly and Wasabi Mayo

Name: Steamed Bao Buns, Pork Belly and Wasabi Mayo
Prep time: 50 min
Cook time: 2 h 50 min
Total time: 2 h 50 min
Yield: 16 pieces
Ingredients: 2 tsp Chinese five spice; 4 Tbsp soy sauce; 2 Tbsp runny honey; 3 garlic cloves; 10 g butter; 40 g onion; 1000 g pork belly, boned, skinless; 200 g water; 250 g strong white bread flour; 2 tsp fresh yeast; ¼ tsp baking powder; ¼ tsp bicarbonate of soda; 1 pinch caster sugar; 1 pinch fine sea salt; 1 Tbsp milk; 1625 g water; groundnut oil; 500 g groundnut oil; 4 - 5 tsp wasabi paste; 1 Tbsp white wine vinegar; 1 Tbsp lime juice; 1 pinch caster sugar; 1 pinch fine sea salt; 1 pinch ground black pepper; 2 egg yolks; 1 little gem lettuce