Wash and de stem the blackcurrants making sure they are free from any debris or bugs
Add the sugar and lemon juice and turn on the heat
Add the water and boil for 20 mins
After 20 mins, cook for another 5 mins and press down the berries with a muddler to release more juice
Using a metal sieve, strain the pulp pressing down with the back of a spoon
Reserve the pure nectar
Puree the leftover pulp and store separately for use in smoothies and cakes