01 - Pour heavy cream and granulated sugar into a medium saucepan, stirring to combine ingredients.
02 - Place saucepan over medium heat, stirring gently until sugar completely dissolves.
03 - Bring mixture to a gentle boil, then reduce heat and simmer for 3 minutes, stirring occasionally to prevent overflow.
04 - Remove from heat, stir in lemon zest and juice until fully incorporated.
05 - Let mixture cool for 5 minutes, then strain through fine sieve into a pitcher to remove zest for smoother texture.
06 - Divide mixture evenly among 4 small serving glasses or ramekins.
07 - Refrigerate for at least 3 hours or until completely set.
08 - Top with fresh berries and mint leaves just before serving.