Upvote:1
The EU legislation applies specifically to mustard oils with an erucic acid content of over 5%:
https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=LEGISSUM%3Al21121
So if you can find some mustard oil with 5% or less, you can import it legally. This may be hard to find in India though, since mustard oil is typically ~40%, but low-acid blends are now available for sale in the UK:
https://www.harighotra.co.uk/blog/news/first-edible-mustard-oil