For the marshmallow, place all of the ingredients in a large bowl set over a pan of simmering water (make sure the bottom of the bowl does not touch the water), and whisk with an electric hand ...
For the marshmallows, place the granulated sugar, glucose and 200ml/7fl oz of water into a heavy-bottomed saucepan and bring to the boil. Cook over a medium high heat until a sugar thermometer ...