For a start get all the ingredients out of the fridge, because we need them at room temperature.

Preheat the oven to 160 degrees. For "test": selected us crumble cookies and mix it with butter. Not the recipe, but I dipped oatmeal cookies for a few seconds in milk. It was easier then to break. The resulting mass spread in a greased form and set for 30 minutes in the refrigerator. For the filling: mix ricotta, cream cheese, lemon juice and 3 tsp of lemon zest. In any case, do not whisk! The bubbles in the filling of no use to us) Then RUB the egg/whites with sugar and gently pour in the root filling. By the way, I was afraid that the lemon juice will "roll" the cheese, but nothing happened. So, don't worry, pour the juice quietly)

Get our "dough" from the fridge. Carefully pour on it the filling and put in preheated oven for 45 minutes. At the end of the time cheesecake is not immediately get to, and leave it to gradually reach room temperature. And then "hide" it for 5 hours in the refrigerator) for a Long time, but the result is worth it!