Italian
Sprinkle the gelatin over the cold water in a small bowl and leave it to soften for 5 minutes.
Heat the cream, milk and 75 g of the sugar in a saucepan over medium heat, stirring, until steaming and the sugar has dissolved; do not let it boil.
Take the pan off the heat, add the softened gelatin and the vanilla, and stir until the gelatin has fully dissolved.
Pour into 6 ramekins or glasses of about 150 ml, let cool to room temperature, then refrigerate overnight or until set.
For the sauce, simmer the berries with the remaining 25 g sugar and the lemon juice for 5 minutes until soft and syrupy, then let cool.
To unmold, dip each ramekin briefly in hot water, run a thin knife around the edge and turn it out onto a plate.
Spoon the berry sauce over the panna cotta and serve chilled.