[NoGravitas]

This seems to be woo. Here's the Wikipedia entry on erucic acid: https://en.wikipedia.org/wiki/Erucic_acid#Health_effects.

Key takeaway: "However, more recent research has cast doubt on the relevance of rat studies to the human health of erucic acid. Rats are unusual in their inability to process erucic acid, and the symptoms in rats caused by a diet with high levels of erucic acid has not been observed in pigs, primates, or any other animals."

In any case, mustard oil has been the primary cooking oil in India since time immemorial, so if high-erucic acid cooking oils were a problem, we'd absolutely know about it by now.

[Bancakes]

Lard and tallow have been cooking fats for centuries, and we've only had medical reports of heart conditions since plant oils became an industry.