When the types of bread were not as diverse as now, sweet red bean bread, soboro bread, butter cream bread was the most popular.
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Ingredients
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1 cup of warm water (240ml, 240g)
3 tablespoons of sugar (45 ml, 40 g)
Half a teaspoon of salt (3 g)
1.5 teaspoons (5 g) instant dry yeast
3 tablespoons of cooking oil (45 ml, 45 g)
Plain flour (strong flour) 3 cups (720ml, 435g)

Italian buttercream
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1 egg white (35 g)
1 pinch of salt (2 g)
1 tablespoon of sugar (13 g)
2 tablaspoon of water (30ml, 30g)
sugar 1/3 cup (80ml, 70g)
Half a cup of unsalted butter (120g) at room temperature

Preheated oven at 180 degrees (355F) for 12 minutes