01 - Combine heavy cream and granulated sugar in a medium saucepan.
02 - Place over medium heat, stirring gently until sugar dissolves and cream just begins to simmer. Do not boil.
03 - Remove from heat. Stir in lemon juice and zest. Mixture will thicken slightly as acid reacts with cream.
04 - Let mixture cool for 10 minutes, then pour into 4 individual serving glasses or ramekins.
05 - Refrigerate for at least 3 hours until set with silky, pudding-like texture.
06 - Serve chilled, optionally garnished with fresh berries, extra lemon zest, or shortbread cookie.