1. Iron stick yam is named because its shape resembles an iron rod, its shape is relatively long and thin, the skin color is dark brown, and it is relatively smooth. In contrast, the common yam is shorter and thicker in appearance, and its skin is lighter in color, usually yellowish-white, with a slightly rough surface. When picking iron stick yams, we will find that it has a harder texture, while ordinary yams are comparatively softer.
2. The difference in taste is also very obvious. Due to its tight fiber structure, the iron stick yam makes it more crisp and chewy. Ordinary yams, on the other hand, are softer and easier to chew because of their loose fiber.
3. In terms of nutritional value, although both are rich in protein, vitamins and minerals, iron stick yam is often higher in terms of nutrient content. In particular, the content of mucus protein and polysaccharides in iron stick yam is significantly higher than that of ordinary yam, and these substances play an important role in enhancing human immunity, lowering blood sugar and anti-tumor.
4. Differences in the cultivation process. Iron stick yam usually has a long growth cycle and special soil requirements, which need to be planted in deep, loose, well-drained sandy soil. In addition, the iron stick yam also has strict requirements for climate, requiring sufficient light and suitable temperature. On the other hand, common yam has a relatively short growth cycle, is highly adaptable, and has a high tolerance to the environment, so it is easier to grow and manage.
5. In terms of harvesting methods, it is quite laborious to dig because the iron stick yam grows deep underground. It is often necessary to dig deep with specialized tools to ensure the integrity of the yam. Common yams, on the other hand, are relatively easy to dig because they don't grow as deep.
6. Processing method. Due to its firm flesh, iron stick yam is very suitable for slicing and drying or making yam tablets, which is convenient for preservation and transportation. Because of its soft and glutinous taste, ordinary yam is more suitable for cooking directly into various delicacies, or processing into mashed yam and other forms.