Preparation

• 将烤箱加热到350°F。在8 x 2-1/2英寸或更高的弹簧盘底部和侧面润滑底部和侧面。

使外壳：

• In a food processor, process the graham crackers and sugar until the cookies are fine crumbs, about 20 seconds. Add the melted butter and pulse about 10 times just until incorporated. (Alternatively, seal the cookies in a heavy-duty plastic bag and use a rolling pin to crush them into fine crumbs. Transfer to a bowl, add the sugar, and toss with a fork to blend. Stir in the melted butter and toss to incorporate.)
• 用手指或勺子的背面，将混合物压入准备好的锅的底部，然后在侧面弯曲。使用平底的直接玻璃将碎屑在底部和侧面更远的侧面平滑（但不是一直到顶部）。确保彻底按下底部，以使面包屑均匀分布。将保鲜膜放在碎屑上，以防止它们粘在手指上，并用手指继续将外壳压成薄甚至层。用双层重型铝箔包裹锅的外部，以防止泄漏。用保鲜膜盖住外壳，然后冷藏直到需要。

Make the filling:

• In the large bowl of a stand mixer fitted with the whisk attachment, beat the cream cheese and sugar until very smooth, about 3 minutes, scraping the bowl and beaters as needed. Beat in the egg yolks, beating until the batter is smooth and scraping down the sides as necessary. Add the lemon juice, vanilla, and salt and beat until incorporated. Beat in the sour cream just until blended.

Bake the cheesecake:

• 将面糊倒入准备好的弹簧盘中。将锅放入较大的锅中（一个12 x 2英寸的蛋糕盘或烤盘），并用1英寸的非常热的水包围。检查烤箱是否在350°F处，然后将蛋糕烘烤45分钟。关闭烤箱而不打开门，让蛋糕冷却1小时。将芝士蛋糕转移到架子上（中心仍然会跳动），并冷却至室温，约1小时。用保鲜膜盖住锅，并冷藏至少6小时或过夜。

Unmold and slice the cheesecake:

• Be sure the cheesecake is thoroughly chilled. Have ready a serving plate and another flat plate that’s at least as wide as the springform and covered in plastic wrap. Wipe a hot, damp cloth around the outside of the ring (or use a hair dryer). Run a metal spatula or a thin knife inside the ring. Release and gently loosen the ring and then lift it off. Set the plate with the plastic wrap on top of the cheesecake and carefully invert the pan. Heat the base of the springform with a hot, damp cloth or hair dryer and lift it off. Set the serving plate lightly on the bottom of the cheesecake (which is now facing up) and reinvert the cake. Lift off the plastic-wrapped plate.
• To cut neat slices, use a sharp, thin-bladed knife dipped in hot water (shake off excess drops) between each slice.