Kahlua Chocolate Cheesecake

Ingredients :
For base:
1 1/2 cups crushed chocolate cookies
1/4 cup butter(melted)
3 tbsp sugar

For filling:
1/2 cup choco chips
1/4 cup whipping cream
1/4 cup kahlua
4 pkgs. 180 gms . Cream cheese (at room temperature )
1/3 cup Cocoa powder
1 cup Sugar
3 Eggs (At room temperature ) 
1 tsp. Vanilla essence

For ganache:
1 1/4 cups chocolate chips
1/4 cup whipping cream
1/4 cup kahlua

Directions : 
1 : Mix chocolate cookie crumbs, butter and sugar.
2: Take a 9" spring bottom pan.
3: Press this chocolate cookie mix onto the bottom of the pan.
4: Freeze for 5-10 minutes and then bake it for 5 mins at 150 degree Celsius. 
5: Leave it on the rack to cool.
6: Melt chocolate chips over double boiler.
7: Add 1/4 cup whipping cream and 1/4 cup 1/4 cup kahlua and stir well until it's a smooth mixture.
8: In a separate bowl, beat cream cheese, cocoa powder and sugar until fluffy.
9: Add chocolate  kahlua mixture to this mix and blend well.
10: Now add eggs one by one and blend it well.
11: Add vanilla essence to this mix. 
12: Pour it over the crust and bake for 10 minutes at 180 degree Celsius. 
13: Now decrease the oven's temperature to 120 degrees and bake for 50 minutes.
14: Leave the oven's door open and let the cake cool down.
15: Melt chocolate,  whipping cream and kahlua and blend well.
16: Spread it on top of the cake and refrigerate overnight or for atleast 6 hours.
17: Put knife in hot water and loosen sides of cake from the sides of the spring bottom pan. 
18: You can also sprinkle grated chocolate on the cheesecake.