Possible Clues:

• Tie David up with added substance
• A divine has more in it than I have
• BHT or MSG, e.g.
• Substance stirred in to colour or flavour food
• Something put into food
• Clubs abandoning habit-forming supplement
• Eg, a colorant or preservative in foods
• Something extra in food
• Moreish, but not hearty, flavouring perhaps
• Supplement, if it included cocaine, would be habit-forming