Crush the Ginger Biscuits
Melt the butter and mix together with the biscuits
Press into an 8 or 9 inch pie plate and place in fridge to chill
For the filling:
Use a grater, or a zester to get the zest from the limes, and place in a mixing bowl.
Squeeze the limes and put the juice into the mixing bowl
Add the can of condensed milk and the pint of double cream to the mixing bowl, stirring gently until it thickens.
Pour into the pie crust and place back in fridge to chill.
Decorate with any topping you like, bananas, chocolate, cherries, lime slices etc.