Thief of Time - Chocolate knowledge

'You don't have to concentrate to stay the same shape,' said Unity. 'And that was the last of the caramels, by the way.'

'No, there's six in one of W&B's Gold Selections,' said Susan. 'Three have got white chocolate cream in dark chocolate and three have got whipped cream in milk chocolate. They're the ones in the silver wrapp- Look, I just happen to know things, all right? Let's keep going, okay? Without mentioning chocolate.’

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The Thief of Time - p307