A traditional artisan bake offering a delicate, buttery crumb and golden exterior, served fresh with clotted cream, preserves, or rich salted butter.
Dissolve the yeast and sugar in warm water, then mix into flour with oil and knead smooth.
Cover and proof until doubled, about 1 hour.
Divide the dough into 12 pieces and roll each into a small round.
Place a spoonful of red bean paste in the centre, pleat, and seal into a ball.
Rest the buns for 25 minutes on parchment.
Steam over boiling water for 12 minutes and serve warm.