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Rice wine is one of the oldest fermented beverages in human history, versions of it appear in Chinese, Japanese, Korean, and Southeast Asian culinary traditions going back thousands of years. I first made sake-style rice wine after spending time in Japan and wanting to recreate the dry, clean, umami-rich style I’d tasted there. The process is more involved than most fruit wines because rice starch must be converted to sugar before yeast can ferment it, but once you understand the role of koji (the enzyme-producing mold), the process becomes intuitive. Homemade rice wine can be genuinely excellent, the controlled batch size and fresh ingredients produce flavors that commercial sake can’t always match.
Types of rice wine
Sake (Japanese) uses koji mold (Aspergillus oryzae) grown on rice to produce amylase enzymes that convert starch to sugar while yeast simultaneously ferments the sugars. This parallel saccharification-fermentation is called multiple parallel fermentation and allows sake to reach 18–20% ABV naturally. Makgeolli (Korean) is a milky, lower-alcohol rice wine made with nuruk (a traditional Korean fermentation starter containing a mix of molds, bacteria, and yeast). Huangjiu (Chinese) uses wheat-based qu starter. For homebrewing, sake is the most approachable high-quality target, and koji is now commercially available from homebrewing suppliers.
Simple sake-style rice wine recipe (1 gallon)
Ingredients
- 4 cups short-grain Japanese rice (sushi rice works; higher-polish sake rice is ideal but not required)
- 200g (about 1 cup) dry rice koji (available from homebrew suppliers or Asian grocery stores as “rice koji” or “malted rice”)
- 1 packet sake yeast (White Labs WLP705 or Wyeast 4134) or champagne yeast as a substitute
- Filtered water
- 1 teaspoon Fermaid-K or similar yeast nutrient
Process
- Prepare the rice: Rinse the rice until the water runs almost clear (removes surface starch). Soak for 1 hour in cold water. Steam (don’t boil) for 45 minutes until fully cooked but slightly firm. Spread on a clean surface to cool to 80°F/27°C.
- Combine rice and koji: Mix cooled rice with dry koji in your sanitized fermenter. Add 1 quart of cold water. Stir well to distribute the koji enzymes throughout the rice.
- Add yeast: Make a small starter with 1/2 cup warm water, 1 teaspoon sugar, and yeast 30 minutes ahead. Pitch into the rice-koji-water mixture. Add yeast nutrient. The initial mixture will be thick, this is normal.
- Ferment: Keep at 55–60°F/13–16°C (a wine cellar or refrigerator turned to its warmest setting) for 3–4 weeks. Stir daily for the first week. As fermentation proceeds, the rice will liquefy as the koji enzymes break down the starch, and the mixture will become increasingly liquid and alcoholic.
- Press and finish: After 3–4 weeks, strain through cheesecloth, pressing to extract all liquid. The result is nigorizake (cloudy sake). Let settle in the refrigerator for 2–3 days, then carefully decant the clear portion for a cleaner final product. Pasteurize at 140°F/60°C for 10 minutes if you want to stop fermentation and stabilize.
Common Questions
Where do I find koji for homemade sake?
Dry rice koji (pre-made koji rice) is the easiest option, it’s ready to use without growing your own mold. It’s available from homebrew suppliers (MoreBeer, Midwest Supplies), specialty Asian grocery stores (look for “rice koji,” “kome koji,” or “malted rice”), and online fermentation suppliers. Growing your own koji from Aspergillus oryzae spores is achievable but requires careful temperature and humidity control (86°F/30°C and 75–85% humidity) for 36–48 hours, a worthwhile project once you’ve made several batches with commercial koji. Koji spores are available from specialty fermentation suppliers and produce more consistent results than the kitchen-grown improvised versions.
How is homemade sake different from rice wine made with commercial wine yeast?
Commercial wine yeast (EC-1118, K1V-1116) can ferment sake if the starch conversion step using koji is handled correctly first, the yeast just needs available sugar, regardless of source. The difference is in flavor: proper sake yeast strains produce specific esters and amino acid compounds that create the characteristic clean, slightly savory, umami-touched sake profile. Wine yeast on converted rice produces something more similar to a neutral rice wine, still pleasant, but missing the characteristic sake flavor compounds. For a first attempt, using champagne yeast is entirely acceptable. For authentic sake character, the sake-specific strains (WLP705, Wyeast 4134, or the Sake One strain from some specialty suppliers) make a meaningful difference.
