Anpan

Ingredients

• 225 g bread flour
• 3½ Tbsp cake flour
• ¼ cup sugar
• 1 tsp Diamond Crystal kosher salt
• 1 tsp instant yeast ((to use active dry yeast, see Notes))
• 1 large egg (50 g each w/o shell)
• 50 ml whole milk
• 50 ml water ((3 Tbsp + 1 tsp; keep at 86ºF/30ºC, see Notes))
• 2½ Tbsp unsalted butter ((cut into small cubes))
• 10 oz sweet red bean paste (anko)
• 1 large egg (50 g each w/o shell)
• 2 Tbsp water
• 2 tsp toasted black sesame seeds