The heading and texture varies by season; winter cabbage has a hard heading and leaves, and spring cabbage has a soft heading and leaves. Summer cabbage has a hard heading and soft leaves. Cabbages are in the market all year round. It is widely used from being eaten raw to simmered dishes. Regardless of seasonality, any of the crops are rich in glutamate.
Levels of naturally occurring glutamate（mg/100g）：30~50