Take it with a grain of salt

Me, to my 10-yr old son this morning, passionately:

‘Walter, I love you as much as people love salt!!’

Walter: ‘Salt? Well, I don’t know. As for me, rather basil.. maybe rosemary..’

Me: ‘Walter, this is an expression from a tale. It’s not my ambition to launch a cooking program.’

Walter: ‘Oh I see.. pardon.’