Place the elderflower blossoms in a glass quart jar.
Add the water and lemon juice to a saucepan and bring just to a boil. Pour over the elderflower blossoms.
Cover jar and let steep for 1 hour. Strain the blossoms out of the infused water and pour the water back into the jar. Add the honey and stir until a liquidy syrup forms.
Chill syrup.
To make lemonade, fill a glas with ice and fill ¾ full with water. Add the syrup to the glass and stir, taste, and add more syrup until desired strength is reached.
Keep syrup refrigerated
Recipe by The Kitchen McCabe at https://www.thekitchenmccabe.com/2019/08/04/elderflower-lemonade/