Best Fruit Drink Recipe: Fresh Watermelon Agua Fresca

This Mexican watermelon agua fresca is a cool fruit drink made by blending ripe watermelon with water, lime, and a little sugar. Fruit, sweetness, and texture vary from household to household, so this easy-to-adjust version lets the watermelon stay front and center while lime keeps each glass lively.

Ingredients

6 cups (900 g) seedless watermelon, cut into roughly 1-inch (2.5 cm) cubes
2 cups (480 ml) cold water, plus more as needed
2 tablespoons (30 ml) fresh lime juice, from about 1 lime
2 tablespoons (25 g) granulated sugar, or to taste
1 small pinch (about 0.3 g) fine salt
Ice, for serving (about 3 cups / 420 g)
6 thin lime wedges or small watermelon slices, optional garnish

Instructions

Rinse the outside of the watermelon before cutting it, then remove the rind and cut the flesh into cubes. Measure 6 cups (900 g); if the fruit is especially juicy, keep any juice that collects on the cutting board and add it to the blender. Remove any visible seeds. Seedless watermelon is convenient, but a few seeds can be picked out by hand if that is what you have.
Put half the watermelon, 1 cup (240 ml) of the cold water, the lime juice, sugar, and salt in a blender. Blend for 30 to 45 seconds, until the mixture looks evenly liquid with no large pieces. Add the remaining watermelon and water, then blend again for about 30 seconds. If your blender is small, work in batches rather than filling it past its safe capacity.
Taste a spoonful before adding ice. Watermelon sweetness varies with ripeness, so blend in another teaspoon of sugar at a time if you want it sweeter, or another teaspoon of lime juice if it tastes flat. If the fruit is very sweet, add a tablespoon or two of water instead of more sugar. Blend for a few seconds after each adjustment so the flavors are evenly distributed.
For a drink with a light, pulpy texture, serve it as blended. For a smoother, thinner agua fresca, pour it through a fine-mesh strainer into a pitcher, pressing gently with a spoon; avoid forcing all the pulp through, which can make the drink cloudy and thick. Stir in up to ½ cup (120 ml) extra cold water if you prefer a lighter flavor.
Cover the pitcher and chill for 30 minutes. Stir well before serving because the watermelon solids can settle. Pour into six ice-filled glasses and garnish with lime wedges or small watermelon slices if desired. The recipe makes about 6 cups (1.4 L), depending on how juicy the fruit is and whether you strain it.

Tips

Choose ripe fruit. A ripe watermelon smells faintly sweet at the cut end and has firm, vividly colored flesh. Very underripe fruit can make the drink taste watery and bland; very soft or fermented-smelling fruit is past its best. Taste a cube before blending so you know how much sugar and lime to start with.
Adjust sweetness gradually. Begin with 2 tablespoons (25 g) sugar, then taste after blending. Sugar dissolves readily in the watery fruit, but adding too much at once can hide the watermelon flavor. If you use a liquid sweetener such as agave, start with 1 tablespoon (15 ml), blend, and add more only if needed.
Keep the drink cold without watering it down. Chill the agua fresca before serving, and use plenty of ice in the glasses rather than blending a large amount of ice into the pitcher. Blended ice melts quickly and can dilute the fruit. For an especially cold pitcher, chill the watermelon cubes for a few hours before making the drink.
Strain only if you want to. Pulp is normal in a blended fruit drink and adds body. Straining gives a cleaner, thinner pour but takes an extra minute and leaves some fruit behind. If the drink seems too thick, first stir in a little cold water; you may not need to strain it at all.

Serving Suggestions

Serve agua fresca very cold in small tumblers or tall glasses, with a lime wedge on the rim. It suits a warm-weather lunch, a picnic, or a casual meal with tacos, grilled vegetables, beans, or rice. Its fruity sweetness also works beside salty snacks such as tortilla chips and salsa. Because the drink is lightly flavored rather than syrupy, it can be poured into smaller glasses and topped up as guests want more.

For a pitcher service, stir immediately before pouring and set out extra lime wedges so each person can sharpen the flavor to taste. Keep the pitcher on ice if it will be out for a while, but do not leave it at room temperature for more than two hours. If serving outdoors in hot weather, return it to the refrigerator promptly between pours. Add ice to individual glasses rather than to the pitcher when you expect the drink to sit, so the remaining servings stay flavorful.

Variations

Watermelon-mint: Blend 6 to 8 fresh mint leaves with the first batch of fruit, then taste before adding more. Mint can become assertive when blended, so a small amount is usually enough. You can also place a mint sprig in each glass instead, which gives a gentler aroma and makes it easy for guests to leave the herb aside.

Watermelon-cucumber: Replace 1 cup (150 g) of the watermelon with peeled, chopped cucumber. The cucumber makes the drink less sweet and more delicate, so begin with the same lime and sugar amounts, then adjust after blending. If the mixture tastes too mild, add a little more lime rather than a large amount of sugar.

Mixed-fruit agua fresca: Replace up to 2 cups (300 g) of the watermelon with hulled strawberries, pineapple, or ripe cantaloupe. Different fruits vary in water content and sweetness, so blend first and adjust the water and sugar afterward. Strawberries give a more berry-forward color and flavor; pineapple brings a sharper, tangier note. A fine-mesh strainer is especially useful if the substitute fruit has many small seeds or fibrous pieces.

Fizzy version: Make the recipe with only 1 cup (240 ml) water, chill it, then add 1 cup (240 ml) chilled sparkling water just before serving. Stir gently to keep the bubbles. This makes a lighter, effervescent drink, so serve it promptly rather than storing it after the sparkling water has been added. For a sweeter result, adjust the fruit mixture before adding the bubbly water.

Less-sweet or no-added-sugar: Omit the sugar and taste the blended fruit. If it needs more brightness, use an extra teaspoon of lime juice; if it needs thinning, use cold water. A ripe watermelon may not need added sweetener. Avoid assuming every melon is equally sweet, though: taste first and make the final adjustment in small increments.

Storage and Reheating

Keep the agua fresca in a clean, covered pitcher or airtight container in the refrigerator and use it within 2 days for the freshest flavor and texture. Refrigerate it within 2 hours of blending. Stir or shake the container before pouring because pulp naturally settles and the liquid can separate slightly. If you notice an unusual smell, fizzing that was not present when made, or an unexpectedly fermented taste, discard the drink rather than serving it.

This drink does not need reheating and should be served cold. Do not store it with ice in the pitcher; melted ice dilutes the remaining servings. If you want to prepare ahead, blend and chill the fruit mixture without ice, then stir it well and add fresh ice to glasses just before serving. You can freeze leftover agua fresca in an ice-cube tray for blending into a future fruit drink, though the thawed texture may be softer and more pulpy than a freshly made pitcher. Do not leave a pitcher out for extended room-temperature storage.

Frequently Asked Questions

Can I make watermelon agua fresca without a blender?
Yes, although it takes more effort. Grate very ripe watermelon over a bowl or mash it thoroughly with a fork, then stir in the water, lime, sugar, and salt. Press the mixture through a fine-mesh strainer if you want a smoother drink. The texture will be less uniform than a blender version, so stir the pitcher before each pour.

Do I have to strain the drink?
No. Leaving the blended fruit unstrained gives the agua fresca more body and keeps the preparation simple. Strain it if you prefer a thinner, smoother drink or if the watermelon has seeds. A coarse strainer removes larger pieces while leaving a little pulp; a fine-mesh strainer produces a clearer result.

Can I use frozen watermelon?
Yes. Thaw frozen cubes in the refrigerator until they are soft enough to blend, then include any liquid released during thawing. Start with less added water because thawed fruit can produce extra liquid. Frozen fruit may make the drink very cold straight from the blender, but it can also give a slightly softer texture after thawing.

What can I use instead of fresh lime juice?
Fresh lime gives the clearest, brightest flavor, but bottled lime juice works in a pinch. Start with 1 tablespoon (15 ml), taste, and add more as needed because bottled products vary in sharpness. Lemon juice can also be substituted in the same amount; the result is still refreshing, but the citrus flavor will be less characteristic of the lime version.

How do I fix agua fresca that tastes watery?
Blend in another cup of watermelon if you have it, or reduce the amount of added water next time. A small pinch of salt and a little more lime can make the fruit flavor seem clearer without making the drink sweeter. If the watermelon itself is bland, there is no reliable way to make it taste fully ripe, so keep additions modest and serve it very cold.

Can I make a pitcher the night before?
You can blend it a few hours ahead and keep it covered in the refrigerator, but the texture is best within 2 days. Stir thoroughly before serving because the pulp settles as it stands. For the freshest citrus aroma, you may blend the fruit and water ahead, then add the lime juice and make the final sweetness adjustment shortly before pouring.

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