Mix together water and agar agar powder in a bowl.
Heat it in a MW or on stove until it is very hot and agar agar dissolves completely.
In another bowl, take cream and heat it in MW or on stove.
Now mix the very hot agar agar mix and the hot cream.
In a larger bowl, cream together room temperature cream cheese, icing sugar and vanilla.
Add the hot cream agar agar mix and whisk until all the ingredients are incorporated well.
Pour this on the prepared base, cover with cling and refrigerate for 3-4 hours.
Use a knife dipped in warm water and wiped on a towel to slice the cheesecake.
Serve with compote on top.