Not how Sybil referred to her husband, Herb! (5,5)

I believe the answer is:

sweet basil

I believe this is a double definition.

'not how sybil referred to her husband' is the first definition.
(Basil Fawlty in Fawlty Towers)

'herb' is the second definition.
(I know that sweet basil is a type of herb)

I've seen this clue in The Guardian.

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