Hoshino Natural Bread Starter is a traditional Japanese bread starter made using brewing-inspired fermentation methods with naturally collected yeast, Japanese wheat, rice, koji, and water.

Founded in 1951, Hoshino describes this as one of its long-trusted signature products, valued for bread with a moist, chewy texture and a deep, fragrant flavour. It can be used across a wide range of breads, including sandwich loaves, sweet buns, French-style breads, and pastries, and it is especially appealing for bakers who enjoy taking more time to build flavour.

For bakers exploring shokupan, café-style buns, or naturally expressive homemade bread, it offers a distinctly Japanese fermentation character rooted in rice and koji culture.

Japanese product name: ホシノ天然酵母パン種

Best for

• Shokupan and sandwich loaves
• Sweet buns and enriched breads
• French-style breads
• Rustic country loaves
• Pastries and other flavour-forward breads

Features

• Traditional Japanese bread starter with a brewing-inspired fermentation process
• Made with naturally collected yeast, Japanese wheat, rice, koji, and water
• Helps create bread with a moist crumb, gentle chew, and fuller aroma
• Suitable for a broad range of breads, from everyday loaves to pastries
• A long-trusted product from a Japanese company founded in 1951

Good to know

This is not an instant yeast. Before baking, you first prepare a live starter by mixing the bread starter into warm water at about 30°C, then letting it ferment at about 28°C for 24 hours. Once ready, the starter should be refrigerated, stirred before use, and used within about 1 week. Hoshino notes that this extra step is part of what helps create the characteristic aroma, texture, and depth of flavour.

Why bakers choose it

Hoshino is a great option for bakers looking for a more traditional Japanese approach to bread fermentation. Its rice-and-koji base gives it a distinctive identity, while the slower starter process makes it especially attractive to those who enjoy breadmaking as a craft rather than simply the fastest route to a finished loaf.

Storage

Store airtight in the refrigerator. After preparing the live starter, keep it refrigerated and use within 1 week.

Origin

Product of Japan.