An ingredient question for UK Dopers

[SciFiSam]

@Floater

I heard Nigella Lawson use the term yesterday.

@Jennyrosity

Delia mentions “groundnut oil” in a number of her recipes, it’s her default cooking oil as she reckons the flavour of it doesn’t overpower whatever you cook in it, unlike other oils. Hence I’ve been using it for years.

Huh. I never use recipe books, so I guess I just wouldn’t have across it there; I’ve never heard anyone use the term in real life.