1Heat oven to 325… Crumb crackers in a food processor or plastic resealable bag using a rolling pin to crush. Mix crackers and butter together… pat into a buttered and lightly floured 10” springform pan.
2Blend cream cheese and sour cream together… add the next 6 ingredients… mix well.
3In a separate bowl with clean beaters mix the egg whites and cream of tartar until stiff… fold into batter. DO NOT BEAT!... Pour batter into pan… bake for 1 hour… turn off oven and let stand in oven for 1 hour… DO NOT OPEN OVEN DURING THIS 2 HOUR PERIOD… Remove from oven and cool…Remove from pan and refrigerate until ready to eat.
Puree the berries with sugar and lemon juice in a blender or food processor. Pour mixture through a fine sieve into a bowl, pressing on the solids. Stir in Chambourd. Chill for several hours or serve at room temperature drizzled over the Fluffy Cheesecake.