Lemon and Lime Cheesecake (No Baking)

I once said that I'm not a cheesecake person and I just might have to take that back. I LIKE CHEESECAKE. I like no bake cheesecakes! Woo! And this one is so so easy. 

Ingredients for the base:

• 2 small packets biscuits
• 150g butter

Ingredients for the filling:

• 1 packet lemon jelly
• 1 packet lime jelly
• 2 cups water (divided, 1 cup hot and 1 cup cold)
• 200ml cream (cold)
• 300g mascarpone

Method:

1. Crush the biscuits. I used a potato masher. 
2. Melt the butter (either over a low heat or using the microwave).
3. Pour this into the crushed biscuits and stir.
4. Spoon into a cake tin and press down very firmly. (I used an 8" cake tin).
5. Melt the two packets of jelly in a cup of hot water, and then add the cup of cold water. Leave this to cool.
6. Whip the well chilled cream.
7. Add the mascarpone to the whipped cream, a little bit at a time, and continue to whisk on a low speed.
8. Add the liquid jelly. I used a strainer to avoid adding any unmelted bits but there weren't any.
9. Stir everything together until homogeneous.
10. Pour the mixture over the biscuit base. Again, I used a strainer to ensure that any tiny lumps of mascarpone didn't pass through. Consistent filling? Achieved. 
11. Leave the cheesecake to set in the fridge. I left mine there overnight.