A list of the contents of this article:

Is the onion fresh?

1. When checking whether the onion is fresh or not, press gently with your hand to see if the black part of the surface of the onion is muddy or moldy. If there is a soft feeling after pressing, it may be moldy and it is not easy to store.

2, look at the variety: onions have yellow skin, white skin and purple skin these varieties, each kind of taste is different, white skin meat is tender, high moisture, taste sweet, yellow skin taste slightly sweet, a little spicy, and purple onion is the most spicy.

3. To judge whether the onion is fresh or not, we should observe its appearance, feel its texture, check its storage state and pay attention to the peculiar smell and so on. Observing the appearance of onions is the first step in judging their freshness. Fresh onions usually have a bright skin, a uniform color, and no obvious damage, spots, or wrinkles. For example, purple onions should be dark purple, while yellow onions should be bright yellow.

4. Whether the onion skin is fresh or not, the drier the onion skin is, the better the onion skin is, and the tighter the wrap, the better. From the appearance, it is best to see that there is a brown texture in the transparent epidermis, and because the sphere of the onion is intact, there is no crack or damage, the skin is intact and smooth, and there is no decay.

How to choose fresh onions

1. Appearance: fresh onions should have a complete, smooth and wrinkle-free skin. The epidermis should be shiny, brightly colored, free of spots or decay. If there are many wrinkles on the onion skin, it may no longer be fresh. In addition, check that the top of the onion is tightly closed and uncracked. Texture: the texture of fresh onions should be solid and elastic. When pressing, if you feel soft or there is water oozing, it may not be fresh.

2. Observe the appearance: fresh onions usually have smooth skins and bright colors. For white and yellow onions, choose those with a yellowish or light brown skin without spots and cracks. Purple onion should choose uniform color, compact skin without wrinkles. Avoid onions that have obvious scratches, cracks, or have begun to sprout. Check the hardness: gently press the onion with your hand, it should feel solid and elastic.

3. Observe the appearance: the skin of fresh onions is usually smooth, dry and harmless. The epidermis should be tight with no obvious cracks or spots. If there are soft spots, mildew spots or wounds on the surface of the onion, it may mean that the onion has begun to rot or be affected by diseases and insect pests. Check hardness: gently press onions with your hands. Fresh onions should be hard, not soft.

4. Observe the appearance: the appearance of fresh onions should be smooth and complete, with no obvious depression or damage. The epidermis should be dry and free of moisture or mildew. The color should be uniform and there is no sign of yellowing or fading. Check hardness: fresh onions should be hard, without soft spots or elasticity. If you squeeze the onion gently, it should be resistant, not soft.

5. Check the top and root: the top of the onion is its bud, and the root is its bottom. Fresh onions should be dry and tight at the top and dry and hard at the roots. If there is a green part at the top, it means that the onion has begun to age and the taste may be affected. If the root is wet and soft, it may also be a sign of decay. Weight: pick up the onion and feel its weight.

6. Cut to see: finally, you can cut the onion to check its interior. Fresh onions should be white with no signs of spots or decay. If the onion has black or brown spots on the inside, it may have begun to rot. In general, judging the freshness of onions requires a comprehensive consideration of their appearance, hardness, smell, stem and interior.

What is the edible part of onion?

1. The rhizome of lotus root, onion, bulb, sweet potato root, carrot rhizome, underground stem thickens, grows horizontally below the surface, looks like a root, and forms branches that extend around, with buds at the apex, lateral buds and adventitious roots on the nodes. Such as ginger. Rhizome is a kind of abnormal stem. The branches of some plants, but do not grow above the ground, but grow in the soil and, morphologically, resemble the roots of plants.

2.Stem onion (scientific name: AlliumcepaL.) is a perennial herb of Liliaceae. Onion is a very common cheap home-cooked dish. Its meat is tender, juicy and spicy, and its quality is good. It is suitable for raw food. Native to western Asia, it is cultivated all over China and is available in all seasons. The edible part of onion is the enlarged bulb of the ground (that is, onion).

3. The edible part of onion is stem. Onion is a very common cheap home-cooked dish. Its meat is tender, juicy and spicy, and its quality is good. It is suitable for raw food. Native to western Asia, it is cultivated all over China and is available in all seasons. The edible part of onion is the enlarged bulb of the ground (that is, onion). In foreign countries, it is known as the "queen of dishes" with high nutritional value.

4. It's a stem. Usually see onion, is actually underground abnormal stem, that is to say, it is a bulb. Because it is dug up from the bottom, it is a misconception to think that this is its root. The onion can be peeled off, and its bottom is a bulb disk, which is flat, and there are terminal buds in the middle, where the leaves grow.

5. Answer: onions eat their underground bulbs. Explanation: as a common vegetable, onions are mainly eaten by the underground bulbs. Characteristics of onion bulbs: the onion bulb is the main part of its nutrient storage, which is rich in nutrients, such as sulfides, vitamins and minerals. These ingredients are good for human health, making onions a common ingredient in cooking.

6. The edible part of onion is bulb. Onion is a vegetable belonging to the lily family, and it is not uncommon for its edible part to be mistaken for a leaf or stem. But in fact, the edible part of an onion is its bulb, an underground organ made up of layers of closely arranged fleshy scales. Onion bulbs store a lot of nutrients, such as vitamins and minerals, which is the main reason why we eat onions.