How to Make Plain Water (Traditional & Healthy Version)

Plain Water, locally known as 'air kosong,' is the most essential beverage in Malaysia, enjoyed across all ethnicities and regions. It is commonly served during meals, at hawker stalls, and in homes, symbolizing simplicity and health. In the Malaysian multicultural context, plain water is often infused with local ingredients like pandan leaves or lemongrass to add a subtle aroma and flavor. The drink is a staple at gatherings, celebrations, and everyday moments, reflecting the importance of hydration in Malaysia's tropical climate. While it may seem basic, preparing plain water with care ensures cleanliness and enhances its refreshing quality. Air kosong is preferred by health-conscious Malaysians as a zero-calorie, naturally hydrating choice, and it is often recommended as part of a balanced diet. Its popularity stems from Malaysia’s rich tradition of prioritizing natural, wholesome beverages over sugar-laden alternatives, making plain water a timeless favorite.

5 min total2 servingseasy

Ingredients

  • Filtered water
    500ml Filtered water (air kosong)
  • Pandan leaf
    1 leaf Pandan leaf (daun pandan)
  • Lemongrass stalk
    1 stalk Lemongrass stalk (serai)
  • Ice cubes
    6 cubes Ice cubes (ais)
  • Lime slice
    1 slice Lime slice (limau nipis)
  • Mineral salt
    a pinch Mineral salt (garam mineral)
  • Clay pot or glass jug
    1 Clay pot or glass jug (for storage)
  • Reusable strainer
    1 Reusable strainer (for filtering)
  • Fresh mint leaves
    2 leaves Fresh mint leaves (daun pudina)
  • Clean drinking glass
    2 Clean drinking glass (for serving)

Step-by-step instructions

Step 1: Rinse pandan leaf and lemongrass stalk thoroughly under running water
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Step 1 · Rinse pandan leaf and lemongrass stalk thoroughly under running water

Rinse pandan leaf and lemongrass stalk thoroughly under running water. Optionally, bruise the lemongrass to release its aroma.

Step 2: Fill a clay pot or glass jug with filtered water (air kosong)
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Step 2 · Fill a clay pot or glass jug with filtered water (air kosong)

Fill a clay pot or glass jug with filtered water (air kosong). Add pandan leaf and lemongrass stalk if desired.

Step 3: Let the water sit for at least 10-15 minutes to infuse the aromas
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15 min

Step 3 · Let the water sit for at least 10-15 minutes to infuse the aromas

Let the water sit for at least 10-15 minutes to infuse the aromas. Remove pandan leaf and lemongrass before serving.

Step 4: Pour infused water into clean glasses using a strainer if needed
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Step 4 · Pour infused water into clean glasses using a strainer if needed

Pour infused water into clean glasses using a strainer if needed. Add ice cubes for a chilled drink.

Step 5: Garnish with a slice of lime
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Step 5 · Garnish with a slice of lime

Garnish with a slice of lime, mint leaves, or a pinch of mineral salt for a refreshing twist.

Step 6: Serve immediately
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Step 6 · Serve immediately

Serve immediately. Enjoy air kosong as a hydrating beverage with meals or alone.

Step 7: Store extra infused water in the fridge for up to 24 hours in a cov...
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24h 0m

Step 7 · Store extra infused water in the fridge for up to 24 hours in a cov...

Store extra infused water in the fridge for up to 24 hours in a covered jug.

Why this recipe is healthy

This beverage is the healthiest choice for Malaysians, as it promotes hydration, aids in digestion, and helps manage weight. Unlike sweetened drinks, plain water is free from additives and sugar, making it suitable for all ages and dietary needs. Its versatility allows for healthy infusions using local botanicals, enhancing both taste and nutrition. Choosing air kosong over other beverages ensures you stay refreshed and energized naturally.

A note on tradition

Air kosong is a staple beverage in Malaysia, served at kopitiams, mamak stalls, and family homes. It is often the first drink offered to guests and is considered a sign of hospitality. Infused versions, using pandan or lemongrass, reflect the multicultural influences of Malay, Chinese, and Indian traditions. Plain water is especially popular during Ramadan and festive seasons, where it helps with hydration after fasting or celebrations. Its simplicity and versatility make it a timeless part of Malaysian daily life.

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