Step 1: Combine cream, sugar, and lemon zest in saucepan. Note: You may add more sugar, if you want it to be sweeter.
Step 2: Bring to boil and continue simmering for 2 minutes. Cool for at least 10 mins.
Step 3: Strain lemon juice and when the cream mixture is cool, stir through.
Step 4: Pour into individual serve glasses, cups or moulds and chill for 4-5 hours, but best left overnight.