Mix together the chopped strawberries, with the sugar and lemon juice in a wide dish. Mash the strawberries until it becomes mushy and the juices come out.
Add the mushed strawberries to a saucepan and cook over medium-low heat. Mix the mixture continuously to prevent it from burning. Bring to a simmer and then turn off the heat. Let cool completely. (You can also do this a day before, and the syrup can last in the fridge for up to one week).
To Serve
Add 2-4 tbsp of the strawberry syrup in a glass, followed by fresh chopped strawberries, and milk. Stir and enjoy!