Which Vietnamese culinary variety of morning glory thrives in drier soil and has thinner stems?

Answer

White morning glory (rau muong trang)

Among the two recognized culinary varieties in Vietnam, the white morning glory, known as *rau muong trang*, is adapted for growth in drier soil conditions. This adaptation results in a physical structure characterized by paler and thinner stems. Consequently, this variety is often preferred for simpler preparation methods, such as quick boiling or stir-frying, as its softer structure cooks rapidly. This contrasts with its counterpart, which requires more moisture.

Which Vietnamese culinary variety of morning glory thrives in drier soil and has thinner stems?
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