What are common mistakes when making Ya Cai (芽菜) — Sichuan Preserved Mustard Greens: The Essential Garnish?

Question

Accepted Answer

Substituting zha cai (榨菜, Sichuan preserved mustard root) for ya cai: They are related but different products. Zha cai is chunkier and more robustly spiced; ya cai is finely shredded and milder. They are not interchangeable in dan dan noodles.