In a large pan, heat the cream and sugar together, until the sugar has completely melted.
Gently bring to a simmer for a minute then turn off the heat.
Stir in the lemon juice and lemon zest and combine well.
Divide the lemon cream into glasses, mason jars or ramekins.
Leave to cool, then cover and chill in the fridge for at least three hours, or for up to 24 hours.
Serve with some fresh mint and some shortbread biscuits.