Start by choosing your fruit. Any fresh, ripe fruit will work, but some popular options include watermelon, cantaloupe, pineapple, mango, and strawberry.

Wash and chop your fruit into small pieces. Remove any seeds, pits, or stems as needed.

Add the chopped fruit to a blender along with 4 cups of water. You can adjust the amount of water depending on how thick or thin you want your aguas frescas to be.

Blend the fruit and water until the mixture is smooth and well-combined.

Pour the mixture through a fine mesh strainer to remove any pulp or seeds. Use a spatula to press the mixture through the strainer and extract as much liquid as possible.

Add sugar to taste. Start with 1/2 cup and adjust as needed depending on the sweetness of your fruit and your personal preferences.

Stir in lime juice if desired. Lime juice adds a little extra zing to your aguas frescas, but it's not necessary if you don't have any on hand.

Chill your aguas frescas in the refrigerator for at least 30 minutes before serving. You can also serve your aguas frescas over ice for an extra refreshing drink.