1. Preheat the oven to 350ยบ.
2. In a bowl mix the butter with crackers and sugar. Press the mixture into the bottom of a spring form pan.
3. With an electric mixer beat the cream cheese until smooth. Add condensed milk, eggs and salt. Beat thoroughly and add lemon juice. Pour the mixture into the pan and bake 50-55 minutes. Let cool at room temperature and refrigerate. Spread the sour cream over the cheesecake and garnish with fruit.