Combine first three ingredients. cut in butter until mixture is crumbly. Add egg yolk and vanilla. Blend thoroughly. Pat 1/3 of the dough on bottom of 9-inch springform pan (sides removed).
Bake in hot oven, 400°F, about 8 minutes or until golden; cool. Butter sides of pan, attach to bottom, and pat remaining dough on sides to height of 1 3/4 inches.
Turn oven up to 450°F Place a 9x13 inch pan of hot water in bottom of oven, This helps to keep the custard creamy.
Beat softened cream cheese until creamy. Add vanilla. Mix next 4 ingredients,(note: important to put lemon peel in flour to coat it), gradually blend in cheese.
Add eggs and egg yolks one at a time, beating after each just to blend. Gently stir in whipping cream. Turn into crust-lined pan.
Bake at 450°F for 12 minutes; reduce heat to 300F and continue baking for 1 hour. May need a little time longer because of water. (NOTE: If cheesecake is getting too brown cover top with foil with hole torn out of the center so that middle of cheesecake continues baking).
Remove from oven; cool. Loosen sides with spatula after 1/2 hour. Remove sides at end of 1 hour. This cheesecake is at it's best if refrigerated overnight.
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" Real New York Style" Cheesecake Supreme (cont.)