Prepare Flowers: Gently shake the flowers and do not rinse - this will wash out any pollen from the flowers.

Peel the skin off the lemons, then cut two of the lemons into slices, and juice the remaining lemon.

Make Syrup: Pour 3 cups of water into a large saucepan and place it over a medium heat. Add sugar and stir. Allow the sugar to melt completely, stirring occasionally. Bring the mixture to boil, then remove it from heat and set aside

Steep Elderflowers: Add elderflowers, lemon slices, lemon peel and lemon juice to the mixture. Stir together using a spoon or spatula and gently press the elderflowers, so they are covered and submerged in the water. Cover the mixture with lid, and allow it to infuse for 24 hours.

Strain: Use a clean tea towel or a muslin cloth to line the kitchen sieve with, then strain the cordial through it, disposing of any bits left in the towel/ cloth. Use a funnel and ladle to pour the cordial into sterilized bottles or jars.

Bottle and Store in the refrigerator for 6 months.