Nyonya curry chicken bun

Dough

• 120 g water
• 50 g sugar
• 2 tsp dried instant yeast
• 350 g baker's flour
• 30 g milk powder
• 1 egg
• 40 g unsalted butter, room temperature
• ½ tsp sea salt

Nyonya curry chicken filling

• 1200 g chicken Marylands, skin on, cut into pieces (3 cm - see Tips)
• 150 g Nyonya spice paste
• 20 g Madras curry powder
• ½ tsp sea salt
• vegetable oil, to grease
• 200 g coconut milk
• 1 egg, lightly beaten