In a large mixing bowl, combine the strong white bread flour, instant yeast, salt, and sugar.

Warm the milk and butter together until the butter is melted, then let cool slightly.

Add the milk mixture to the dry ingredients and mix until a dough forms.

Knead the dough on a floured surface for about 10 minutes until smooth and elastic.

Place the dough in a lightly greased bowl, cover, and let it rise for about 1 hour or until doubled in size.

Punch down the dough and divide it into equal portions. Shape each portion into a bun.

Place the buns on a baking tray lined with parchment paper, cover, and let them rise for another 30 minutes.

Preheat the oven to 200°C (400°F).

Optional: Brush the tops of the buns with milk and sprinkle sesame seeds on top.

Bake for 15-20 minutes or until the buns are golden brown.