Cadbury's cocoa : absolutely pure, therefore best.
The pattern
This still is filed under Borrowed medical authority.
Define
The claim wears a lab coat: a diagram, a percentage, a clinical tone that is not necessarily a clinician.
Mechanism
Authority costume. Science-looking form transfers trust. Use it only when the substance matches, or we are documenting a historical mechanism. We do not recommend the abuse.
Verdict
We have real evidence and the buyer needs it in a form they already trust: a chart, a protocol, a named standard.
Why it works
Contrasts the wholesome innocence of a child enjoying the drink with a stark warning against 'foreign preparations mixed with Alkali', leveraging parental protective instincts.
Steal this when
You are selling a food product and want to emphasize purity by warning against hidden additives in competitors' products.
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