Combine broken ladyfingers and unsalted butter in a food processor until the mixture resembles fine crumbs.
Only press the underside of a 9-inch springform pan with a 3-inch height.
Wrap a double layer of aluminum foil around the bottom and up the sides of the pan's exterior.
For Filling:
With an electric hand mixer, beat cream cheese, sour cream, ricotta cheese, vanilla, and lemon juice in a large mixing bowl for 8 minutes, or until light and fluffy.
Add sugar and continue beating for 4 to 5 minutes, or until the mixture is very smooth
Add the eggs one at a time, vigorously beating after each addition.
Pour the mixture into the crust-lined baking pan.
For Baking:
Place the springform pan inside a larger baking dish and add the heated water to reach a third of the way up the sides of the springform pan.
Bake in an oven preheated to 250 degrees Fahrenheit for four hours, or until set and a knife inserted near the center comes out clear, and the top is pale golden.
Remove the springform pan from the larger baking dish and allow it to settle at room temperature.
While the cake is still warm, loosen it from the pan by running the tip of a sharp knife around the sides.
Cool in the refrigerator for at least 4 hours or more.
To Serve:
Remove the springform pan side with care.
Slice the cheesecake using a sharp knife dipped in hot water and wiped it dry.
Serve cooled with whipped cream, fresh strawberries, and strawberry sauce.