Iced Hibiscus Cooler
Dried hibiscus flowers, ginger and citrus steep into a tart ruby cooler in 15 minutes. Chill it, pour over ice, and finish with mint for 6 glasses.
- Prep
- 5 min
- Cook
- 15 min
- Total
- 20 min
- Serves
- 6
Ingredients
What you’ll need — tap to tick off as you go
- 30 g
- 1 ½ l
- 100 g
- 20 g
- 30 ml
- 300 g
Process
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Bring 1.5 l water to a boil in a medium saucepan over high heat.
Add 30 g dried hibiscus flowers, 20 g sliced fresh ginger and the zest of 1 orange. Stir, then reduce heat to low and simmer gently for 10 minutes.
Stir in 100 g white sugar until fully dissolved, then remove the pan from the heat and let the mixture steep for 5 minutes.
Strain the liquid through a fine-mesh sieve into a heatproof jug, pressing lightly on the solids with a spoon, then discard the hibiscus, ginger and orange zest.
Stir in 30 ml fresh lime juice. Taste and add a little more sugar or water if the cooler is too tart or too strong.
Cool to room temperature, then refrigerate for at least 1 hour until thoroughly chilled.
Fill 6 tall glasses with 300 g ice cubes, pour the chilled hibiscus cooler over the ice and garnish each glass with a fresh mint sprig.
Kitchen notes
Kitchen notes
- The most common mistake is boiling the hibiscus for too long: past 10 to 12 minutes it turns bitter and muddy. Keep it at a gentle simmer and pull it off the heat as soon as the liquid is deep ruby red.
- Do not skip the lime juice. Hibiscus is flat and tea-like without acid; the lime sharpens the flavor and makes the cooler taste finished.
- If you want a stronger, more concentrated cooler for mixing with sparkling water, use 1 l water instead of 1.5 l and sweeten to taste after straining.
- Sugar must be added while the liquid is still hot, otherwise it will not dissolve and will sink to the bottom of the jug.
Substitutions
- white sugar→honey or agave syrup, stirred in off the heat
- fresh ginger→1/2 tsp ground ginger added with the hibiscus
- orange zest→lemon zest or 2 tbsp orange juice added after straining
- lime juice→lemon juice in the same quantity
Storage & reheating
Store the strained, unsweetened or sweetened cooler in a sealed jug or bottle in the refrigerator for up to 5 days. Keep it away from strong-smelling foods because hibiscus absorbs odors. Serve straight from the fridge over fresh ice; do not reheat. For longer storage, freeze in ice-cube trays for up to 3 months and drop the cubes directly into sparkling water or iced tea.
FAQ
The questions we get asked most
Why did my hibiscus cooler turn bitter?
Bitterness comes from simmering the dried flowers too long or at too high a heat. Keep the brew at a gentle simmer for no more than 10 minutes, then steep off the heat for 5 minutes and strain immediately. If it is already bitter, dilute with extra water and add a little more sugar and lime juice to balance it.
Can I make hibiscus cooler ahead of time?
Yes. The strained cooler keeps in the refrigerator for up to 5 days, and the flavor actually improves after a few hours as the ginger and orange meld. Make it the night before, keep it covered, and pour over fresh ice just before serving so it does not get watered down.
How much sugar should I use if I want it less sweet?
Start with 60 g sugar for a tart, refreshing cooler and taste after the lime juice is added. You can always stir in more sugar while the liquid is still warm, but you cannot remove sweetness once it is in. Honey and agave work too, though they add their own flavor.
Can I use fresh hibiscus flowers instead of dried?
Fresh roselle or hibiscus petals can be used, but you will need roughly three times the weight because fresh petals contain much more water. Simmer 90 g fresh petals for only 5 to 7 minutes, since they release their color and flavor faster than dried ones.
Why is my cooler not red enough?
Pale color usually means too few flowers for the amount of water or too short a steep. Use 30 g dried hibiscus per 1.5 l water and simmer for the full 10 minutes. A squeeze of lime at the end also brightens the red color because the acid shifts the natural pigments.
Can I freeze hibiscus cooler into ice cubes?
Yes, and it is the best way to avoid a watered-down drink. Pour the cooled cooler into ice-cube trays and freeze for 4 to 6 hours, then store the cubes in a freezer bag for up to 3 months. Add them to sparkling water, lemonade or iced tea instead of plain ice.
Is hibiscus cooler caffeine-free?
Yes. Dried hibiscus flowers contain no caffeine, so this cooler is fine to drink in the evening. Just check that any bottled hibiscus concentrate you use is not blended with black or green tea, which would add caffeine.
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