In large bowl, using electric mixer, beat together cream cheese, sugar, dry coffee and vanilla until smooth and fluffy (about 5 min). Add eggs, one at a time, mixing just to incorporate. Add sour cream all at once and blend well. Pour into prepared pan and bake at 375′ (190 C) for 35-40 min. Cheesecake will appear set but not done. Remove from oven, cool, wrap in plastic wrap and refrigerate overnight.