Duhat or Lomboy: A Purple Filipino Fruit Cooler Without Crushed Seeds or Too Much Sugar

Duhat, also called lomboy in some Philippine regions, is the dark purple Java plum identified by DOST-FNRI as Syzygium cumini. It gives a striking seasonal drink, but its relatively large seed means fruit weight and usable juice are very different measures. Putting the whole fruit in a high-speed blender can fracture the seeds and introduce bitterness. A better route is sorting, gentle mashing, measured water and thorough straining. The result is a fresh beverage for refrigeration, not a long-life bottled cordial. Source 1 Source 2

What to prepare and decide

For a measured starting batch, the Duhat Juice recipe uses 700 g ripe fruit, four cups potable water divided across extraction, syrup and dilution, up to half a cup sugar, one-quarter teaspoon salt and four calamansi. Sweeten a test glass before committing the full sugar allowance. Have a sieve, masher, measuring jug and clean covered pitcher. Record the cup measure used rather than treating the stated five-cup yield as guaranteed. Source 2

A method you can repeat

1. Inspect each bunch, discarding mouldy, split, fermented or badly damaged fruit. Wash carefully under safe running water, then remove stems. Do not identify an unfamiliar wild berry from colour alone; use fruit sold and named by a trustworthy source.
2. Use one cup of the measured water to gently mash the washed fruit with the salt. Leave the hard seeds intact. Rest briefly as the recipe directs, then sieve, using another measured cup to rinse flavour from the pulp.
3. Collect the strained extraction and record its volume, including the two cups of water already added; it is not undiluted juice. Dissolve the chosen sugar allowance in one further cup of water, cool promptly, then combine gradually with the extraction, calamansi and remaining water to taste.
4. Sweeten a small test glass rather than the full pitcher. Add a little cooled sugar syrup and a squeeze of calamansi; taste the balance of tang, astringency and sweetness. Different harvests need different corrections. More sugar cannot restore flavour if excessive water has already diluted the drink.
5. To scale, record concentrate per cup, water per cup and the amount of potable ice separately. A nominal 250 mL glass containing ice does not hold 250 mL of juice. Chill the prepared fruit drink promptly rather than relying on a huge amount of melting ice at the table.
6. For cost accounting, divide the fruit cost by the actual glasses served at the chosen concentration, then add sweetener, drinking water and packaging. Do not use a price per kilogram of whole berries as though that mass were all seed-free pulp.

Sources: Source 2 Source 3

Why these choices matter

There are three different figures to record: fruit bought, strained extraction including its added water, and the final served drink. A blender full of whole berries does not measure seed-free yield. Keep the water additions visible so a larger pitcher is not mistaken for more fruit extraction.

Serving, variations and real-world trade-offs

Serve with safe ice and optional fresh calamansi at the table. A darker beverage may stain clothing and counter surfaces, so strain in a washable area. A fruit cooler can accompany afternoon merienda, but the syrup does not transform it into a health treatment or compensate for unsafely handled fruit. The fruit-washing guide covers the clean-water sequence before crushing.

Food safety and handling

This is fresh unpasteurised juice. Use sound washed fruit, safe water and clean equipment, refrigerate at 4°C or below and prepare a modest batch for prompt service. Follow FDA’s advice to choose pasteurised or otherwise treated juice for people more vulnerable to foodborne illness; washing is not pasteurisation. Source 3 Source 4 Source 5

Seed-free extraction, measured dilution and a short cold service window give duhat its best chance to shine.