11.   Add sliced cheese and toss gently again, moistening mixture with reserved cooking water, if necessary.

12.   Add the cheese to the pan and toss with the potatoes, then pour in the eggs.

13.   Add the cheese, a handful at a time, stirring constantly with a table fork.

14.   Add the cheese, crumbling it with your fingers, and toss again.

15.   Add the cheese, egg yolk, lemon juice and the minimum amount of ice water.

16.   Add the cheese, in handfuls, stirring constantly.

17.   Add the cheeses and stir until they are well blended.

18.   Add cheese and allow it to melt.

19.   Add cheese and bread crumbs.

20.   Add cheese and mix well.