The best replacement for napa cabbage is savoy cabbage.

The best alternatives to napa cabbage are rated as following:
★★★★★  savoy cabbage
★★★★★  bok choy
★★★★  cabbage
★★  regular cabbage
★★  savoy
★★  green cabbage
★★  romaine lettuce
★  chinese cabbage

Your alternative for napa cabbage is not listed? Suggest!
Speaking about napa cabbage, one probably shouldn't forget about ramen noodle salad.

Other search terms related to napa cabbage and their ratings are:
★★★★★ ramen noodle salad
You have in mind a companion for napa cabbage and it is not yet here? Propose!



Google Trends

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napa cabbage
savoy cabbage
bok choy