Vietnamese Salted Lime Cooler

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A beloved street-side refresher from Vietnam, this salted lime cooler balances tangy citrus with briny depth and just enough sweetness to round out the sharp acidity. Quick-salted limes give the drink its signature savory edge, while a homemade sugar syrup keeps everything bright and drinkable. Serve it ice-cold for the ultimate pick-me-up on a sweltering afternoon.

Nutrition Facts

Per serving (estimated)

• 95 kcalCalories
• 0 gFat
• 0 gSaturated Fat
• 25 gCarbs
• 1 gFiber
• 22 gSugar
• 0.5 gProtein
• 1450 mgSodium
• 90 mgPotassium
• 25 mgCalcium
• 0.3 mgIron
• 22 mgVitamin C
• 12 mcgVitamin A

Ingredients

For the Quick-Salted Limes

• 4 thin-skinned fresh limes, rinsed and dried
• 1/4 cup coarse kosher salt
• 2 tablespoons granulated sugar
• 1/2 cup hot water

For the Sugar Syrup and Assembly

• 1/2 cup granulated sugar
• 1/2 cup water
• 4 cups cold filtered water
• 2 cups ice cubes
• Fresh mint sprigs for garnish (optional)

Directions

1. Slice each lime crosswise into 4 wedges, leaving the base intact so they hold together, then place in a clean glass jar with a tight-fitting lid.
2. Dissolve 1/4 cup salt and 2 tablespoons sugar in 1/2 cup hot water, stirring until clear, then pour the brine over the limes and seal the jar.
3. Let the limes salt at room temperature for 24 to 48 hours, giving the jar a gentle shake once or twice, until the rinds soften and the brine turns cloudy with extracted juice.
4. To make sugar syrup, combine 1/2 cup sugar and 1/2 cup water in a small saucepan, bring to a gentle simmer, and stir until the sugar fully dissolves, about 3 minutes. Cool completely.
5. Muddle 2 of the salted limes, peel and all, in the bottom of a large pitcher, pressing firmly to release juice and aromatic oils.
6. Pour in the cooled sugar syrup and stir to combine with the salted lime brine from the jar.
7. Add 4 cups cold water, stir well, and taste; adjust with more syrup for sweetness or a small pinch of salt for extra depth.
8. Fill four tall glasses with ice, pour the cooler over the ice, and garnish each glass with a fresh mint sprig if using.
9. Serve immediately and give each glass a quick stir before drinking, since some natural settling will occur.

Cook’s Notes

• Use thin-skinned, ripe limes for the most aromatic result; thick-skinned limes can leave a bitter rind taste in the drink.
• For the traditional long-fermented version, store salted limes in the refrigerator for 2 to 4 weeks instead of using the quick method to deepen the flavor.
• Always taste and adjust before serving since weather, lime variety, and salting time will shift the balance of salty and sour notes.
• A splash of sparkling water poured in at the end turns the cooler into a bubbly, soda-style refresher similar to drinks served at Vietnamese cafés.
• Submerged in their brine, the salted limes keep in the refrigerator for up to 3 months and only get better with age.

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