〜もさることながら

Meaning

States that while the former is naturally so, the latter is even more important. Acknowledges the former without dismissing it, then emphasizes the latter a step further.

Examples

味もさることながら、この店は雰囲気が素晴らしい。 The taste is one thing, but the atmosphere of this restaurant is wonderful.
本人の努力もさることながら、周囲の支えが大きかった。 His own effort was important, but the support of those around him was great.