01 -
Combine granulated sugar and 1/2 cup water in a medium saucepan over medium heat, stirring until the sugar is fully dissolved. Remove from heat and allow to cool to room temperature.
02 -
In a large pitcher, whisk together the cooled simple syrup, freshly squeezed lemon juice, and 1 1/2 cups cold water until well combined.
03 -
Transfer frozen strawberries, vanilla yogurt, prepared lemon mixture, and ice cubes to a blender. Blend until the texture is completely smooth.
04 -
Pour the blended smoothie into glasses and serve immediately while chilled.