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Duhat Winemaking

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Duhat (Syzgium cumini (L.) Skeels) is a fruit tree of wide  distribution in the Philippines and other tropical countries.

The fruits occur in loose  cluster, having variable shape from ellipsoid to ovoid, with pulp color ranging  from grayish white to purple. It is harvested during the months of March until  June. Duhat fruit is rich in antioxidants.

Duhat wine has purple-red color, aged in glass vat for at least 6 months. The  wine has distinct fruity aroma and smooth flavor that provides consumers with a delightful experience.

Duhat Wine Processing


  • Duhat fruits
  • Sugar, refined
  • Wine yeast
  • Sodium metabisulfite
  •  Cotton
  • Flasks
  • Funnel
  • Gallon jars
  • Tray/Basin
  • Strainer
  • Wire needle
  • Paddle
  • Graduated cylinder
  •  Fermentation lock
  • Wine  bottles
  • Cork/ Aluminum cap
  • Cap seal
  • Water bath
  • Waring  blender
  •  pH meter
  • Hand Refractometer


Starter Preparation

  • Pasteurize 10% of the total volume  of the “must” in boiling water for 30 minutes. Cool to 40-45oC.
  • Inoculate with pure culture of wine yeast.
  • Ferment for 18-24 hours and inoculate  in the prepared “must”.

“Must” Preparation

  • Wash fully ripe fruits (1.0 kg) and  drain.
  • Macerate by hand or use a fruit pulper.
  • Add appropriate volume of water (2.0 L) and adjust sugar content to  20oBrix (dry wine) or 25oBrix (sweet wine) by addition of  refined sugar.

Treatment of the “Must”

  • Add 5ml of 10% sodium  metabisulfite per gallon of “must” to destroy spoilage microorganisms.
  • Cover the  jar properly and stand for 16-18 hours at room temperature.


  • Add the starter and ferment for 4 days.
  • Filter the “must” to separate the seeds and pulp.
  • Transfer the liquid in clean  fermentation jars and cover with fermentation lock.
  • Continue anaerobic  fermentation for 3 weeks.

Harvesting, Storing and Aging

  • Siphon the wine using  tygon tubing. Care must be exercised not to make too much movement on the jar so  as not to disturb the sediments.
  • Add 5ml of 10% sodium metabisulfite per gallon of wine. Fill the jars with  wine to its brim and cover tightly to prevent access of oxygen.
  • Store in cool (20oC), dry place for at least 6 months to  mature.
  • Place in clean wine bottles and cover with cork or similar closure. Seal with  paraffin- glycerin mixture or plastic seal. Finally, cover the bottle with a cap  seal.

Author: qdfriends

QDfriends bonded together for the purpose of helping others, and respecting themselves, their culture and the environment.

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