01 -
Pour the cold water into a small bowl. Sprinkle the gelatin evenly over the surface and let it stand for 5 minutes until fully hydrated.
02 -
Combine the heavy cream, whole milk, sugar, and salt in a saucepan. Warm over medium heat, stirring often, until steaming and the sugar has dissolved. Do not boil.
03 -
Remove the pan from the heat. Whisk in the bloomed gelatin until no granules remain, then stir in the vanilla extract.
04 -
Divide the mixture among 6 small ramekins or glasses. Cool for 15 minutes, cover, and refrigerate for at least 4 hours or overnight until softly set.
05 -
Combine the berries, sugar, lemon juice, and salt in a small saucepan. Cook over medium heat for 6-8 minutes, stirring often, until the berries release juice and the sauce looks glossy.
06 -
Let the sauce cool to room temperature. For a smoother sauce, press it through a fine mesh sieve, or leave it chunky for a rustic topping.
07 -
Spoon the cooled berry sauce over the chilled panna cotta. Garnish with mint if using and serve cold.