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Watermelon Agua Fresca
Mexico · Beverages · Vegetarian

Watermelon Agua Fresca

Agua fresca — Spanish for 'fresh water' — is one of Mexico's most elemental drinks. Street carts and restaurants serve it in great plastic jugs: fruit blended with water, a little sugar, and lime, light enough to be genuinely thirst-quenching rather than just sweet. The watermelon version is the most obvious, and perhaps the best. Ripe watermelon is already 92% water, which means agua fresca is really just concentrating that water and adding a small amount of lime for balance. The result is pinker and more fragrant than anything you could make with juice, and ten times more refreshing than anything from a bottle. Mint is optional in the strict sense, but the combination of watermelon, lime, and fresh mint is one of the better flavor agreements in summer cooking.

15 min 65 kcal 6 serves Easy🌿Vegetarian🇲🇽Mexico★★★★★5.0· 1 reviews

Ingredients

ServingsMetric
  • 1.2 kgseedless watermelon flesh
  • 500 mlcold water
  • 3 tbspfresh lime juice
  • 1 tsplime zest
  • 2 tbspcaster sugar or honey
  • 1 pinchfine salt
  • 10 gfresh mint leaves
  • 1 lime

Method

  1. Pick a good watermelon. This recipe lives or dies on the fruit. A ripe watermelon is deep red inside, not pale pink; it smells sweetly floral at the stem end; it feels heavy for its size; and when you tap it, it makes a hollow thud rather than a dense thunk. If the watermelon is not sweet, no amount of sugar will make the agua fresca taste like much. Cut the watermelon into rough cubes, removing the rind. You don't need to be precise — these are going into a blender.
  2. Blend in batches. Working in batches if necessary, blend the watermelon cubes on high for 60 to 90 seconds until completely smooth and liquid. Add a splash of the water to help the blender if the watermelon is not releasing enough juice on its own. The blended mixture will look very pink and slightly foamy — the foam will settle. Do not add all the water at this stage; add only what the blender needs to run.
  3. Strain and season. Pour the blended watermelon through a fine-mesh sieve into a large pitcher, pressing the pulp with the back of a spoon to extract maximum liquid. Discard the pulp, or skip this step entirely if you prefer a thicker, more smoothie-like texture. Add the remaining cold water, lime juice, lime zest, sugar or honey, and the pinch of salt. Stir well. Taste and adjust: more lime if it needs brightness, more sugar if the watermelon was bland, more water if it's too intense.
  4. Add the mint and chill. Lightly bruise the mint leaves between your palms — just enough to release the oils without shredding them — and add to the pitcher. Let the agua fresca rest in the fridge for at least 20 minutes. The mint infuses gently and the flavors come together. Don't leave the mint longer than a couple of hours or it will start to taste slightly bitter and the color will darken.
  5. Serve. Fill glasses with plenty of ice. Stir the pitcher well before pouring — watermelon agua fresca separates naturally as it sits, with the denser pulp settling at the bottom. Pour over the ice, add a mint sprig and a lime round to each glass. Serve immediately. The agua fresca keeps in the fridge for up to 2 days; stir before each serving.

FAQ

Agua fresca (Spanish for 'fresh water') is a category of traditional Mexican drinks made by blending fruit, flowers, seeds, or grains with water and a small amount of sweetener. The key distinction from juice: agua fresca is significantly diluted with water, making it much lighter and more hydrating. Where juice is concentrated and dense, agua fresca is meant to quench thirst on a hot day — it's closer to very flavourful water than to fruit juice. The fruit-to-water ratio is roughly 1:1 by volume, but this varies by recipe and fruit. Watermelon already contains so much water that the effective ratio is even lighter.

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Comments (2)

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  • Lucía F.
    49d ago

    Perfecto para el verano! La pizca de sal es el secreto q nadie te dice. Suena raro pero pruebalo, la sandía sabe mas a sandía

  • Sergei MartynovAuthor
    52d ago

    The whole point of agua fresca is that it's barely sweetened water with fruit — not a smoothie, not a juice. Blend and strain through a fine mesh sieve, that's it. Too much sugar kills it. A pinch of salt sounds wrong but try it — it makes the watermelon taste more like watermelon. Serve over lots of ice with a lime wedge.