Making the knots
Repeat with the remaining dough, be sure to tuck the ends in, or the knots will spring apart. Space the buns out, as they expand when proving and baking, then transfer to the prepared baking sheets.
Loosely cover with oiled clingfilm and set aside for 45 mins–1 hr in a warm place until almost doubled in size. Preheat the oven to gas 5, 190 ̊C, fan 170 ̊C. Brush with beaten egg, then bake for 20-25 mins until risen and golden.