Amaretto cheesecake from loren martin

1                    1/2 c graham cracker crushed
     1/2                Stick butter, melted
  15       oz           Ricotta cheese
   8       oz           Cream cheese
   4                    Eggs, lightly beaten
     1/2   c            Sugar
     1/3   c            Amaretto liquor
   1       t            vanilla
     1/4   ts           Salt

  Great topped with strawberry jam. Combine crumbs of
  graham crackers and butter; press over bottom and
  sides of greased 9 inch spring-form pan. Chill.
  Preheat oven to 325. Beat together ricotta and cream
  cheese until smooth.  Pour mixture into pan; bake 1
  hour and 15 minutes, or until firm in middle.  Cool 30
  minutes in pan before removing. Cool completely
  (preferrably in refrigerator overnight) before
  serving. Top with fresh fruit, or jam.