Put all but 2 strawberries into a pan
along with 100ml water and the sugar.
Over a medium heat, cook strawberries
until soft enough to mash, about 3 mins.
Take off the heat and squash the
berries, using a fork, until pulpy. Add
the marshmallows, then stir them
into the hot strawberries until they
dissolve. Leave to cool.
Whip the cream until it holds its
shape. Fold the cream into the cooled
strawberry mix, then spoon into one
bowl or separate pots and chill for about
2 hrs, or until set. Cut the reserved
strawberries in half and use to decorate.