It seems that the cultivation of onion goes back to the ancient Egyptians. The subjects of the Pharaohs had many beliefs about the onions, they thought symbolized eternal life because of the concentric circles that form and believed that the strong smell could raise the dead. For this reason even buried in tombs of pharaohs.
Greeks and the Romans used onions for purposes other than food, but it was in the Middle Ages the onion was an important ingredient for human nutrition.
Who came not to weep onion peeling or cutting a ?
The cause is due to an enzyme content in the onion that also gives the strong flavor.
So it is advisable to decrease the tears peel onions under running water, as the ' sulfuric acid is very soluble in water a good part away with water.
As you can see from the table below the onions are very rich in vitamins, especially vitamin C
| Chemical composition and nutritional values \u200b\u200bper 100 g of raw onion | |
|---|---|
| edible part | 83% |
| energy | 26 Kcal |
| water | 92.1 g |
| 1.0 g protein | |
| 0.1 g fat | |
| 5.7 g carbohydrates | |
| starch | g 0 |
| soluble sugars | |
| 5.7 g dietary fiber 1.0 g | |
| sodium | |
| 10 mg Potassium 140 mg | |
| iron | 0.4 mg |
| 25 mg calcium | |
| phosphorus | 35 mg vitamin B |
| 1 (thiamine) 0.02 mg | |
| 2 vitamin B (riboflavin) 0.03 mg | |
| vitamin PP (niacin ) | |
| 0.50 mg vitamin A (retinol equivalent) 3 mcg | |
| 5 mg vitamin C | |
| from Wikipedia - Source: INRAN - National Research Institute Food and nutrition | |
There are different types of onions, distinguished by the color of the outer skin and the use made of it in the kitchen. The varieties are best known for sure:
- the Tropea red onion
very sweet - the onion Borretana
- the sweet onion
- etc. ... The
onions are eaten raw, chopped fine in salads. But entering the preparation of thousands of recipes , chopped or cut in joulienne (thin strips as shown in photo) as a pan.
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