Combine all ingredients in a saucepan over medium heat. Cook for 5 minutes, until bubbly, then use a fork to smash the strawberries. Cook another 4-5 minutes. Remove from heat to cool.
Transfer the mixture to a blender to pulse until smooth. Strain through a sieve to store in a glass container in the fridge.
(Optional) Reserve the strawberry pulp for serving.
To Make the Sodas:
Add 1-2 tablespoons of the strawberry syrup to the bottom of a glass, then fill with crushed ice cubes.
Fill with 1/2 cup to 3/4 cup freshly squeeze lemon juice.
Top with lemon lime probiotic soda, or sparkling water, to taste. Enjoy!