01Wrong your whole life
ContrarianYou've been [DOING X] wrong your whole life and your [AUTHORITY FIGURE] was right about it.
“You've been browning butter wrong your whole life and your grandma was right about it.”
When you're correcting a basic technique most people get wrong; the authority figure earns the credibility.
Say the claim flat and calm, then prove it within a few seconds. A contrarian line without proof reads as bait.