Ricotta Cheese:
Heat the 2L of milk in a pot, and once it begins to warm up, add the 1/3 cup of vinegar.
Stir the mixture gently until it starts to curdle. Let it sit for a few more minutes to ensure the curds fully separate from the whey.
Strain the curds and remove any excess liquid, leaving behind a thick, ricotta-like cheese. Set it aside.
Cream Mixture:
In another pot, combine the 1L of milk, 1/3 cup of sugar, and 7 tbsp of cornstarch. Stir this mixture thoroughly to avoid lumps.
Place the pot on medium heat, stirring constantly, until it thickens into a smooth custard.
Once the mixture has thickened, add the ricotta cheese you prepared earlier, and mix everything together.
Add the rose water and orange blossom water, stirring well to incorporate the floral flavors.
Once the mixture is smooth and thick, pour it into a plate or shallow dish, cover it, and refrigerate for at least a couple of hours to allow it to cool and set.