Method
Make the ginger syrup
Peel 30 g of fresh ginger and cut it into thin coins. Add 600 ml of water, 30 g of fresh ginger, 75 g of granulated sugar, and 1 g of fine sea salt to a medium saucepan. Bring the mixture to a gentle simmer over medium heat, stirring until the sugar dissolves, then simmer for 3 minutes so the liquid smells clearly of ginger without becoming harsh.
03:00Extract the tamarind

Remove the saucepan from the heat. Break 80 g of seedless tamarind pulp into small pieces and add it to the hot ginger syrup. Press and stir with a potato masher or sturdy spoon until the pulp loosens into the liquid, then let it stand for 10 minutes. The mixture should turn deep reddish brown and look pulpy rather than smooth.
10:00Strain and balance the base

Set a fine-mesh sieve over a heatproof pitcher and pour in the tamarind mixture. Press the softened pulp firmly against the sieve to extract the flavorful liquid, then discard the fibrous solids. Stir in 30 ml of fresh lime juice. Taste the base: it should be assertively tart and slightly sweeter than the finished drink because ice and sparkling water will dilute it.
Finish the cooler
Fill serving glasses with 300 g of ice cubes and divide the tamarind base among them. Top with 360 ml of sparkling water and stir once or twice, gently enough to preserve the bubbles. Finish with fresh mint (optional) and serve immediately while the drink is cold and lively.
Smart Substitutions
- No tamarind pulp? Use 4 tablespoons (60 ml) of a pourable Thai, Vietnamese, or Latin American tamarind paste in place of the 80 g pulp. Add it after the ginger syrup simmers and taste before adding more. For thick black Indian tamarind concentrate, start with 4 teaspoons (20 ml), then add 1 teaspoon at a time if needed because brands vary in strength.
- No sparkling water? Use cold still water for a softer, less lively finish.
- No lime? Use fresh lemon juice for a brighter, slightly less floral acidity.
- Prefer a deeper sweetness? Replace the granulated sugar with light brown sugar; it will add a mild molasses note.
Tips and Variations
- Cut the ginger across the grain so more fresh surface meets the water during the short simmer.
- Press the tamarind pulp firmly, but stop before forcing coarse fibers through the sieve.
- Add sparkling water only at serving time and stir lightly so the drink keeps its lift.
What Went Wrong?
- Cooler is too tart Stir in a little more sugar while the base is still warm, then taste again after dilution.
- Cooler tastes too sweet Add more lime juice or sparkling water a little at a time until the tamarind tastes clear again.
- Drink feels gritty Pass the base through a clean fine-mesh sieve a second time without pressing hard.
- Ginger flavor is weak Use firm fresh ginger, cut it more thinly, and keep the full 3-minute simmer before adding the tamarind.
Nutrition Estimate
- Fiber: 1 g per serving
- Sodium: 105 mg per serving
Nutrition disclaimer:This recipe is provided for general cooking information only. Nutrition values are estimates and may vary by ingredients, brands, preparation methods, and serving sizes. Check ingredient labels and follow appropriate food-safety practices. This content is not medical, dietary, allergy, or professional food-safety advice.



