A traditional artisan bake offering a delicate, buttery crumb and golden exterior, served fresh with clotted cream, preserves, or rich salted butter.
Knead the flour, yeast, water, and sugar into a smooth dough and prove for 1 hour.
Punch down and divide the dough and bean paste into 12 pieces each.
Flatten each dough piece, cup it in one hand, and seal a ball of paste inside.
Place the buns seam-side down in the steamer and let rise 20 minutes.
Steam over boiling water for 15 minutes, then rest 3 minutes.
Brush with oil, scatter with sesame seeds, and serve warm.