'What must it do that for?'
'So that you get more flavour from less tea.'

'Do you mean that my usual tea is not good enough?'
I am afraid not. And you let your kettle boil too long'.

'May I ask you something Mrs Barnes?'
'Of course, Mr Nobble.'

'I don't understand.'
'Boiling water takes out the oxygen. Now let's heat your teapot.'

'Can you tell me how to make a perfect cup of tea?'
'Well, first you need the right tea leaves.'

'Why do we do that?''
'So that the tea stays hot while it brews.'

Oh, I see.