BA_SHO ONIGIRI Grand Opening in San Mateo, California — November 21–22, 2026

We are excited to announce the grand opening of BA_SHO ONIGIRI in San Mateo, California, on November 21–22, 2026!

BA_SHO ONIGIRI brings the authentic taste of Japanese rice to everyday life, combining premium quality, fresh ingredients, and the convenience of a satisfying meal.

Our rice is sourced directly from farmers in Japan and freshly milled in-store to preserve its natural sweetness and rich flavor. Each onigiri is carefully shaped by hand, using thoughtfully selected ingredients.

Our signature sandwich-style onigiri offers a fresh take on a beloved Japanese favorite — healthy, delicious, and easy to enjoy on the go.

Grand Opening Special Gift

To celebrate our opening, customers who spend $10 or more will receive a complimentary 5 lb bag of premium Japanese rice.

Limited to 50 bags per day. One gift per customer.

Visit BA_SHO ONIGIRI

Grand Opening: November 21–22, 2026

Location: 1051 Park Place, San Mateo, CA 94403

Instagram: @basho_onigiri

We look forward to welcoming you and sharing the simple joy of freshly made Japanese onigiri!

Premium Japanese rice. Freshly milled. Hand-shaped. Made for everyday enjoyment.