〜はともかく
setting aside, regardless of
Noun + はともかく(として)
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はともかく sets one issue aside to focus on something more important: 見た目はともかく、味はいい, "never mind how it looks, it tastes good".
The first item isn't denied, just put on hold: it may matter, but it's not the point right now. 結果はともかく、最後まで頑張ったことが大切だ, "whatever the result, what matters is that you tried your best".
It's also a common way to change the subject: 冗談はともかく、本題に入りましょう, "joking aside, let's get down to business".
はさておき means the same and is a little more formal. Compare はもちろん, which takes the first item for granted rather than setting it aside.
Examples
見た目はともかく、味はいい。
It may not look much, but it tastes good.
結果はともかく、最後まで頑張ったことが大切だ。
Whatever the result, what matters is that you tried your best to the end.
値段はともかく、品質が一番大事だ。
Price aside, quality is what matters most.
冗談はともかく、本題に入りましょう。
Joking aside, let's get down to business.
他の人はともかく、私は反対です。
I can't speak for anyone else, but I'm against it.