Strawberry & Pimm's Jelly

750g ripe strawberries,plus some to serve
50g caster sugar
250-300ml pimm's
5 sheets leaf gelatine
whipped cream and shortbread,to serve

Wash,drain and half the strawberries.Tip into a blender with the sugar and blitz to crush.Line a colander with a sheet of muslin.Place the colander over a large bowl.Tip strawberry mixture into colander and allow the juice to drip through overnight.(Not in fridge).In the morning, measure the juice-you should have 300-400ml.Add enough pimmm's to make 600ml.Place the gelatine leaves in a bowl and cover with cold water.Leave for 1o mins to soften,then left out of water,squeezing out the excess.In a small pan,heat 200ml of the strawberry and pimm's liquid until it is hot to touch,then remove from the heat.Add the gelatine to the hot liquid and stir to dissolve.Pour back into the remaining cool liquid.Divide the mixture between 4 glasses and place in the fridge for 4 hours to set.Top with whipped cream,halved strawberries and serve with shortbread.