Pour your measured water and sugar into a saucepan and heat on medium
Cook, stirring the mixture until your sugar has completely dissolved.
Add muddled blackberries and lilac and continue heating for 30 seconds before removing from heat. Note that the more muddled your blackberries are, the more color and blackberry flavor you'll be adding to your syrup!
Allow syrup to infuse for half an hour as the simple syrup cools completely
Strain syrup into an airtight container and store in the fridge
Simple syrup will last for one month if stored in an airtight container inside the fridge.