Cheese cake

Ingredients
For Crust
 5 tablespoons unsalted and melted butter
 12 graham crackers (3-by-5 inch)
 1/4 cup sugar
 1/4 teaspoon  salt

For Filling
 2 1/2 pounds bar cream cheese, room temperature
 1 1/2 cups sugar
 1 teaspoon finely grated lemon pee(optional)
 1 tablespoon fresh lemon juice
 1/2 teaspoon  salt
 4 large eggs
 1 cup sour cream


Directions
1.Preheat oven to 375 degrees.
Make crust: Butter a 9-by-3-inch springform pan.

2.In a food processor, pulse graham crackers until fine crumbs form
3.Add butter, sugar, and salt, and pulse to combine. Press crumb mixture into bottom and about 1 inch up side of pan. Bake until set, 12 to
 15 minutes; let it cool.
 Reduce oven to 325 degrees.

4.Set a kettle of water to boil.
Make filling:
1.Using an electric mixer, beat cream cheese on medium until fluffy, scraping down side of bowl.
2.Gradually add sugar, beating until fluffy. Beat in lemon peel and juice, and salt. Beat in eggs, one at a time, scraping down side of bowl after each addition.
 Beat in sour cream.

3.Wrap bottom half of pan in foil. Pour in filling; place in a roasting pan. Pour in boiling water to come halfway up side of springform.
 Bake until just set in center, about 1 3/4 hours. Remove pan from water; let cool 20 minutes. Run a knife around edge; let cool completely.
 chill overnight before serving.