Make the dough in the bread maker. Lightly beat 1 egg and place in the bread pan, followed by melted butter, caster sugar, salt, water, milk, bread flour, and yeast. Close the lid and select program 30 (SD-YR2550) or program 29 (SD-R2530), Manual Bread Kneading, 20 minutes and press Start.
When the bread maker beeps, press Stop. The select program 31 (SD-YR2550) or program 30 (SD-R2530), Manual Rise, 30 minutes and press Start.
When the bread maker beeps, press Stop and remove the bread pan from the bread maker. Tip dough onto a clean work surface. Lightly shape the dough into a log and cut dough into 12 equal pieces.
Line a baking tray with a sheet of non-stick baking paper. Preheat the oven to Convection 180°C.
Shape each dough portion into a ball, and evenly space onto the prepared baking tray. Lightly whisk the remaining egg and brush the tops of the rolls, followed by sprinkling with sesame seeds.
Bake in the oven for 20 minutes. Remove from the oven and allow to cool on a wire rack.
Whilst the buns are cooling make the rose sauce. Add ingredients to a bowl and stir thoroughly to combine.
Split the buns in half, add a lettuce leave to the base of the roll, top with 2-3 peels prawns and dollop over rose sauce. Top the remaining half of the bun and enjoy.
Make bread on the day of serving.