Douhua is the short form of doufuhua or daufufaa. It is a Chinese snack made with very soft tofu. It is also referred to as tofu pudding and soybean pudding.
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History of Douhua

Tofu or doufu or daufufaa is thought to have originated in ancient China during the Western Han Dynasty. Chinese people have developed and enriched the recipes for tofu dishes on the basis of their own tastes, such as mapo tofu, stinky tofu, pickled tofu and uncongealed tofu pudding, etc.
Vietnamese cuisine
In Vietnam, it is known as tàu hủ nước đường, tàu hủ hoa or tào phớ, đậu hủ, tàu hủ. It varies in three regions in Vietnam:
Northern region- it is served with sugar, chia seeds. It is enjoyed as warm in winter and cold with ice in summer.

Central region- it is cooked with spicy ginger. Sugar is added. Douhua pieces are usually unshaped because of their softness.
Southern region- it is served warm with lychee and coconut water. Ginger is optional. Douhua pieces are more firm than those in the North and the Central.