Put the cream, sugar, and lemon zest into a saucepan
Heat gently over a low heat until the sugar has dissolved and the cream is just under scalding point (just hot enough to touch)
Remove from the heat and add the juice of your 4 lemons
Add to cocktail glasses or individual ramekins
Chill in the fridge until set
Optionally strain the mixture before pouring into glasses if you don't love the texture of the zest
Decorate and serve chilled
