Elderflower and Basil Jelly

I picked up a couple of vintage jelly moulds at Broadway Market last weekend, they're from Paris, which made me think they were elegant and romantic, pfft I am a sucker. Bought them home to make elderflower jelly with vanilla ice cream. 
Have you heard about the Jelly mongers Bompas and Parr? They create the most incredible avante-garde bespoke jellies http://www.telegraph.co.uk/telegraphtv/7718688/American-Express-Bompas-and-Parr-Jellymongers.html
check out the glow-in-the-dark absinthe jellies!