Lemon Cheesecake with Gingersnap Crust

Preheat oven to 350°F. Stir cookie crumbs and butter in medium bowl until evenly moistened. Press mixture onto bottom of 9-inch-diameter removable-bottom cheesecake pan with 3-inch-high sides. Bake crust until deep golden, about 12 minutes. Cool completely. Reduce oven temperature to 325°F.
Stack 3 large sheets of foil on work surface. Place same cake pan in center. Gather foil snugly around pan bottom and up sides to waterproof.
Using electric mixer, beat cream cheese in large bowl until smooth and fluffy. Gradually beat in sugar, then salt. Beat in eggs, 1 at a time. Beat in sour cream, grated lemon peel, and lemon juice. Pour filling into pan.
Place wrapped cake pan in large roasting pan. Pour enough hot water into roasting pan to come halfway up sides of cake pan. Bake cake until filling is slightly puffed and moves only slightly when pan is shaken gently, about 1 hour 25 minutes. Remove cake pan from water bath; remove foil. Cool cake in pan on rack 2 hours. Chill uncovered until cold; cover and keep chilled at least 1 day and up to 2 days.
Cut around pan sides; carefully loosen pan bottom from sides and push up pan bottom to release cake. Place cake (still on pan bottom) on platter. Garnish with lemon leaves or twists.
The pan: It must be three inches high to hold all the filling. If your nine-inch springform pan is that high, it can be used instead. The cream cheese: For best results, use Philadelphia brand. The crust: Grind the gingersnaps in the processor or place them in a heavy-duty plastic bag and finely crush them with a rolling pin.