Preheat the water in a saucepan and add sugar to it. Stir the mixture until the sugar turns brown.
¾ cup sugar, ¼ cup water, 1 teaspoon lemon juice
Then add lemon juice to it and keep stirring the mixture. It is suggested to turn off the heat when you notice that the mixture starts to bubble.
Spill the caramel sauce into the crème caramel baking dish or ramekins. Tilt the dish so that the caramel fills the rim.
The pudding
Preheat the oven to 160 C / 330F.
Whisk the eggs, vanilla extract and salt together in a mixing dish. Add the sugar to the mixture and keep whisking until it attains homogeneity and consistency.
In a saucepan, heat the milk and heavy cream over medium heat (don't let it boil).
2 cups fresh whole milk, ⅔ cup heavy cream
Pour the milk over the egg mixture and stir until homogenized. Pour the mixture over the caramel into the baking dish and bake for 40 minutes. Take it out of the oven and let it rest for half an hour, then chill in the refrigerator for 4-5 hours.
Run a sharp knife around the sides of the dish and place a serving dish on the top of it. Then hold both well, and then flip it upside down.
Notes
Make sure the color of caramel syrup is neither too dark nor too light.