Good white chocolate is made with pure cocoa butter and sugar, powdered milk and sometimes vanilla. The only thing missing is the cocoa liquor. But be careful and read labels - there is lots of white junk being sold that is not made with pure cocoa - instead coconut oil or vegetable oil are used. These can taste just fine - but shouldn't be called white chocolate!
Can any good brand of chocolate be used for dipping strawberries and still set up hard when cool? If not, can anything be done to it or added to the melted chocolate to ensure it will set up hard to the touch?