Is しゃぶしゃぶ typically written in hiragana rather than katakana? If so, why is it written in hiragana?
Wikipedia says that it is onomatopoeia:
The term is an onomatopoeia, derived from the sound emitted when the ingredients are stirred in the cooking pot.
And I thought that onomatopoeia was typically done in katakana (though the latter citation gives some exceptions).