Prepare Blossoms: Rinse the apple blossoms gently to remove any dirt or insects.
Infuse the Blossoms: In a medium saucepan, bring the water to a boil. Once boiling, reduce the heat and add the apple blossoms. Let the blossoms simmer for about 10 minutes, allowing their floral flavor to infuse into the water.
Strain: After the simmering time, remove the saucepan from heat and strain the liquid to remove the blossoms using a strainer or cheesecloth.
Add Sugar and Lemon: Return the infused liquid to the saucepan, then add the sugar and lemon juice. Stir the mixture over medium heat until the sugar has dissolved completely.
Simmer and Reduce: Allow the mixture to simmer for another 15-20 minutes to reduce and thicken into a syrup-like consistency.
Cool and Store: Remove the saucepan from the heat and let the syrup cool. Once cooled, transfer it into a clean jar or bottle for storage.