Chhau-a-koe, also spelt caozaiguo, is a type of kuih with a sweet dough made with glutinous rice flour, sugar, and a ground cooked paste of Jersey cudweed or Chinese mugwort.

The herbs give the dough and the finished kuih a unique flavor and brownish green color.

Chhau-a-koe is usually made in Qingming Festival as a celebratory food item.

Although the kuih can be made from either herb, Chinese mugwort is more commonly used in making Hakka-style caozaiguo.

[1][2] The herb-flavored dough is commonly filled with ground meat, dried white radish, or sweet bean pastes.