01 - Pour heavy cream and granulated sugar into a medium saucepan. Place over medium heat, stirring continuously until sugar completely dissolves.
02 - Continue heating until the cream just begins to simmer, watching carefully to prevent boiling. Remove from heat immediately.
03 - Stir in fresh lemon juice and grated zest. The acid will cause the mixture to thicken slightly as it combines with the cream.
04 - Let the mixture sit at room temperature for 10 minutes to cool slightly while maintaining pourable consistency.
05 - Divide the mixture evenly among 4 individual ramekins or dessert glasses.
06 - Refrigerate for minimum 3 hours until firm with a silky, pudding-like consistency.
07 - Serve chilled. Optionally garnish with fresh berries, additional lemon zest, or shortbread cookies.