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.