Ingredients

2 large lemons
1/3 cup sugar
6 oz. fresh or frozen raspberries or strawberries, washed and without their green tops
1 cup cold water
2 cups sparkling water
Ice cubes

Directions

Equipment needed: a blender, a knife and cutting board, measuring cups, a juicer, a sieve, a pitcher and glasses

1. Cut the lemons in half across the middle. Using the juicer, squeeze the juice from each half. You should get about 1/2 cup of juice.

2. Pour the lemon juice into the blender and add the berries, sugar and 1 cup cold water. Put on the lid and whirl it around until it's nice and smooth. Remove the blender pitcher from the machine.

3. Put a medium strainer on top of a large serving pitcher. Carefully pour the lemon mixture into the pitcher through the strainer. Using a spoon, gently press down on the berry-and-lemon mixture to squeeze out all the juice. Throw away the stuff in the strainer.

4. Add the sparkling water to the pitcher slowly — it will foam up, so add it slowly. Stir in the ice cubes and pour into glasses.