Shake free or rinse your elderflowers of any bugs and trim off as much stem as possible (as this part of the plant is not considered edible)
Prep your Grapefruit and Lemons by using a vegetable peeler to collect the zest before cutting large rounds. Set aside.
In a large pot, bring water to a boil and turn off the stove
Pour in sugar and stir until dissolved
Add the zest and rounds of your lemons and grapefruit then add citric acid and stir until dissolved
Finally, place your flowers into the pot and give a quick stir so everything is submerged
Cover with a towel and leave it be for 24 hours
After it has been left to steep overnight strain the entire mixture through a clean tea towel or muslin to get rid of any impurities
If you'd like your syrup to last a little longer, reheat it briefly to a low boil before placing it in sterilized bottles and seal according to instructions.
