Vegan bao sliders

Name: Vegan bao sliders
Prep time: 25 min
Cook time: 1 h 50 min
Total time: 1 h 50 min
Yield: 6 portion
Ingredients: 125 g water; 1 tbsp plant-based milk; 250 g plain flour; 2 tsp dried instant yeast; ¼ tsp baking powder; ¼ tsp bicarbonate of soda; 1 pinch caster sugar; ¼ tsp sea salt; vegetable oil; 1 garlic clove; 250 g onion; 30 g vegetable oil; ½ tsp Chinese five spice powder; ¼ - ½ tsp dried chilli flakes; 4 bananas; 60 g hoisin sauce; 2 tbsp fresh coriander leaves; ¼ tsp sea salt; plain flour; 500 g boiling water; 2 Lebanese cucumbers; 2 fresh mango; 2 tbsp rice wine vinegar; 1 tbsp maple syrup; 1 tsp sesame oil; 1 fresh red chilli; 1 lime; 1 ½ tbsp roasted unsalted peanuts; fresh coriander; spring onions/green onions