Where We’re Starting
KOJI Fermentation
For centuries, Koji fermentation has shaped Japanese culinary culture — from miso to sake to soy sauce.
Its natural enzymes develops rice into a naturally sweet, nourishing base, and easy for the body to embrace.
- Supports comfortable digestion
- Helps maintain skin hydration from within
- Creates umami and deep flavor
At Cultured by Koji, we bring this time-tested practice into modern life thoughtfully.
Rich in nutrients including prebiotics, amino acids, vitamin B.
KOJI RICE CONCENTRATE
Naturally sweet, alcohol-free rice drink crafted through traditional koji fermentation.
Dilute, blend, or use as a natural sweetener in everyday recipes.
From Niigata, Japan
Pantry Series
Every item in this series draws on koji fermentation — miso, sake lees (the nutrient-rich byproduct of sake brewing), and more — to build a deeper, more rounded taste than any single ingredient could offer on its own.
Gentle on the gut. Only natural ingredients.
KOJI RICE CREAM
- Developed in collaboration with a 1-Michelin-star chef
- Sweetened with Japanese Koji fermented rice drink
- Suitable for families and kids
Our Collection
- Sale!
PantryGenmai Shio Koji (Brown Rice)
Original price was: $12.85.$10.20Current price is: $10.20. Add to cart - Sale!Rice Cream
Koji Rice Cream Party Bundle (15 cups)
Original price was: $168.00.$128.90Current price is: $128.90. Add to cart - Sale!Drinks
Koji Rice Concentrate – Monthly Subscription
Original price was: $91.50.$86.92Current price is: $86.92. / Month Add to cart - Sale!Drinks
Koji Rice Concentrate
Price range: $18.30 through $247.05 Select options This product has multiple variants. The options may be chosen on the product page - Sale!Drinks
Brown Koji Rice Concentrate (Organic Genmai)
Price range: $18.30 through $247.05 Select options This product has multiple variants. The options may be chosen on the product page
100+ Happy Customers
Stockist
- Ryan’s Grocery Great World 1 Kim Seng Promenade, #B1-144/145, 237994
- Meidi-Ya Supermarket 9 Raffles Blvd, Millenia Walk #02-26, 039596 (Koji concentrate only)1
- Group Therapy Coffee 181 S Bridge Rd, #01-05 & #K1-04, 058743
- IKI Healthy Soba
- 1 Raffles Pl, #04 – 47, 048616
- 100 Tras St, #02-15 & 28 100 AM, 079027
Join Our Community
Be the first to know about new releases, seasonal flavours and educational insights on Koji fermentation.
Born from a mother's search.
Ancient fermentation. Modern benefits.
At Cultured by Koji, we take this ancient wisdom and build a modern wellness pantry around it — starting with ice cream, and expanding into drinks and beyond. Every product shares the same promise: real ingredients, natural fermentation, and goodness you can actually feel.