50²µ/1¾´Ç³ú condensed milk
25g/1oz liquid glucose
300²µ/10½´Ç³ú icing sugar
200g/7oz icing sugar
2 tsp vanilla extract or other flavouring
200g/7oz unsalted butter, softened
100ml/3¾fl oz double cream
100g/3½oz baking margarine, softened