Yam Authenticity:
Genuine Yam: The surface is typically yellowish white or light yellow with visible longitudinal grooves, wrinkles, and fibrous root marks. Occasionally, a thin layer of light brown skin may remain. It has a firm texture, is not easily broken, and the cross-section is white and powdery with small dark dots scattered throughout. The aroma is faint, the taste is mild, slightly sour, and it has a sticky texture when chewed.
Counterfeit Items:
Cassava: Often sliced into thin pieces, the outer skin is usually removed, leaving behind a brown or tan color near the edges. The cut surface is white and powdery, with visible veins close to the skin. There is a small woody core in the center, and some pieces may show cracks. When touched, it feels powdery, similar to talc. The scent is mild, and the taste is bland.
Ginseng: This plant has an irregular cylindrical or conical shape. The remaining bark is thicker, appearing yellowish brown or reddish brown. The wood part is fresh yellow, often containing stone cells that can be easily peeled off. The material is solid, the cross-section is yellowish white and powdery, with a few light brown spots. It has no strong odor, but it is sweet with a slight sourness and a chewy texture.
Sweet Potato: Usually found in thick or irregular slices, the remaining skin is often reddish or taupe in color. The cut surface is white or yellowish white, slightly elastic, and shows visible yellowish brown "ribs" or lines. A light yellow-brown ring can be seen around the edge of the skin. It is crispy, powdery, and has a naturally sweet flavor.
When identifying yams, it's important to pay attention to the texture, color, and overall appearance. Genuine yams have a more natural and consistent look compared to fake ones, which often appear too uniform or lack the characteristic features of real yams. Always check for the presence of fibrous root marks, the color of the skin, and the texture of the inside. These details can help distinguish authentic yams from imitations like cassava or sweet potatoes.
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