Sweet Rice Wine/ Koji / Sake / Brewing Time 4 to 5 days

Sweet Rice Wine/ Koji / Sake / Brewing Time 4 to 5 days is a medium Japanese recipe that serves 4. 400 calories per serving. Recipe by Brew Wine & Beer At Home on YouTube.

Prep: 5 hrs 15 min | Cook: 96 hrs | Total: 101 hrs 45 min

Cost: $257.92 total, $64.48 per serving

Ingredients

  • 500 g Sticky (Wax) Rice (Rinse 3‑4 times, soak overnight, then steam)
  • 1 sachet Angel Rice Leaven Yeast (Contains the koji mold and yeast culture)
  • 1.5 L Reverse Osmosis (RO) Water (Used for cooling rice and for fermentation; boiled if using tap water)
  • 1 tsp Salt (Optional, to lightly season the rice before fermentation)

Instructions

  1. Rinse the rice

    Place the sticky rice in a bowl and rinse under cold water 3‑4 times, draining each time, until the water runs clear.

    Time: PT10M

  2. Soak the rice

    Transfer the rinsed rice to a clean bowl, cover with fresh RO water and let soak for at least 4 hours (overnight is best).

    Time: PT4H

  3. Steam the rice

    Drain the soaked rice and place it in a steamer basket. Steam over boiling water for 40‑45 minutes, until the grains become translucent and fully cooked.

    Time: PT45M

    Temperature: 100°C

  4. Cool the rice in RO water

    Transfer the hot steamed rice to a fine mesh sieve and rinse briefly with cool RO water to stop cooking and bring the temperature down.

    Time: PT10M

  5. Prepare the yeast

    Open the Angel Rice Leaven Yeast sachet and sprinkle the contents over the cooled rice.

    Time: PT2M

  6. Mix yeast into rice

    Using clean hands or a spatula, gently mix the yeast throughout the rice until evenly distributed.

    Time: PT5M

  7. Transfer to fermentation container

    Place the yeast‑infused rice into a clean fermentation container. Add enough RO water to just submerge the rice (about 1 L for 500 g rice).

    Time: PT5M

  8. First fermentation

    Seal the container with its lid (tight but not airtight) and let sit at room temperature (20‑25 °C) for 36‑48 hours. The rice will develop a mild alcoholic kick.

    Time: PT48H

    Temperature: 20-25°C

  9. Second water addition and fermentation

    After the first period, open the container, add up to 1 L more RO water (just enough to keep rice submerged), reseal, and ferment for another 48 hours.

    Time: PT48H

    Temperature: 20-25°C

  10. Refrigerate to clarify

    After the second fermentation, move the container to the refrigerator for at least 12 hours. The liquid will settle and become clearer.

    Time: PT12H

    Temperature: 4°C

  11. Bottle and store

    Carefully siphon or pour the clarified sweet rice wine into clean bottles, seal, and keep refrigerated. Consume within 2‑3 weeks for best flavor.

    Time: PT5M

    Temperature: 4°C

Nutrition Facts

Calories
400
Protein
6 g
Carbohydrates
85 g
Fat
0.5 g
Fiber
1 g

Dietary info: Vegan, Gluten‑Free, Dairy‑Free

Allergens: Rice, Yeast

Last updated: April 16, 2026

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Sweet Rice Wine/ Koji / Sake / Brewing Time 4 to 5 days

Recipe by Brew Wine & Beer At Home

Learn how to make traditional Japanese Koji (fermented sticky rice) and turn it into a sweet rice wine using Angel Rice Leaven Yeast. This step‑by‑step guide covers washing, soaking, steaming, fermenting, and bottling, with tips for safety, troubleshooting, and storage.

MediumJapaneseServes 4

Shop all ingredients on Amazon in one click • Printable PDF with shopping checklist

Source Video
112h 27m
Prep
55m
Cook
13h 36m
Cleanup
126h 58m
Total

Cost Breakdown

$257.92
Total cost
$64.48
Per serving

Critical Success Points

  • Rinse rice until water runs clear
  • Steam rice until fully translucent
  • Mix yeast evenly into rice
  • Maintain proper fermentation temperature (20‑25 °C)
  • Ensure rice stays submerged during fermentation

Safety Warnings

  • Steam can cause severe burns – handle the steamer with oven mitts.
  • Fermentation produces alcohol; keep out of reach of children and pets.
  • If you notice mold (green, black, or pink) discard the batch immediately.

Frequently Asked Questions

Everything you need to know about this recipe

Q

What is the cultural significance and history of Koji in Japanese cuisine?

A

Koji (Aspergillus oryzae‑inoculated rice) is a cornerstone of Japanese food, used to make sake, miso, soy sauce, and amazake. It was first documented in the 7th century and revolutionized fermentation by converting starches into sugars, enabling the development of many traditional Japanese staples.

cultural
Q

What are the traditional regional variations of sweet rice wine in Japan?

A

In Japan, sweet rice wine is known as amazake and varies by region: Kansai style is thicker and often served warm, while Kyushu versions may be thinner and flavored with ginger. The recipe here mimics a simple home‑brew version using Angel Rice Leaven Yeast.

cultural
Q

How is Koji traditionally served in Japanese culture?

A

Koji‑fermented rice can be eaten plain as a snack, mixed into soups, or used as a topping for dishes like okonomiyaki. It provides a sweet, slightly alcoholic flavor and a soft texture that complements savory foods.

cultural
Q

During which Japanese festivals is sweet rice wine (amazake) traditionally consumed?

A

Amazake is traditionally enjoyed during the New Year’s celebration (Shogatsu) and at winter festivals such as the Omiya Matsuri, where it is served warm to help keep participants warm.

cultural
Q

What other Japanese dishes pair well with the fermented rice (Koji) produced in this recipe?

A

Koji pairs beautifully with miso soup, grilled fish, or as a base for homemade miso. It can also be mixed into salad dressings for a subtle umami boost.

cultural
Q

What makes this sweet rice wine recipe unique compared to other home‑brew rice wines?

A

This recipe uses a commercial Angel Rice Leaven Yeast sachet that contains both koji mold and yeast, shortening the traditional multi‑step process and delivering a ready‑to‑drink sweet rice wine in just 4‑5 days.

cultural
Q

What are the most common mistakes to avoid when making sweet rice wine with Koji?

A

Common errors include under‑steaming the rice (which prevents proper mold growth), using chlorinated tap water (which kills the culture), and sealing the container too tightly, which can cause pressure buildup and off‑flavors.

technical
Q

Why does this recipe use a short 36‑48 hour primary fermentation instead of a longer traditional sake mash?

A

The Angel Rice Leaven Yeast is a fast‑acting starter that combines koji and yeast, allowing alcohol to develop quickly. A longer mash is unnecessary and can lead to over‑fermentation and sourness.

technical
Q

Can I make this sweet rice wine ahead of time and how should I store it?

A

Yes. After bottling, store the wine in the refrigerator. It stays fresh for 2‑3 weeks. For longer storage, keep the sealed bottles in a cool, dark place, but quality will decline after a month.

technical
Q

What texture and appearance should I look for when the Koji is ready?

A

Ready Koji should be soft, slightly sticky, and emit a pleasant yeasty‑sweet aroma. The grains will appear plump and may have a faint white mycelial coating, but no visible mold colors.

technical
Q

What does the YouTube channel Brew Wine & Beer At Home specialize in?

A

The YouTube channel Brew Wine & Beer At Home focuses on home‑brewing techniques for alcoholic beverages, including beer, wine, sake, and fermented foods, offering detailed tutorials and product recommendations for hobbyist brewers.

channel
Q

How does the YouTube channel Brew Wine & Beer At Home approach Japanese fermentation differently from other channels?

A

Brew Wine & Beer At Home emphasizes using commercially available starter kits like Angel Rice Leaven Yeast to simplify traditional Japanese fermentation, making it accessible to beginners without requiring specialized inoculation equipment.

channel

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