It is perhaps the most popular vegetable in the world. Since ancient times it has enjoyed great prestige and is also attributed healing properties. It is an excellent disinfectant, capable of killing germs and bacteria, purifies blood, is laxative, diuretic, a good nervous tonic and also helps to expel bugs from the body. The onion is rich in vitamins A, B and C, with the advantage that they are hardly destroyed during cooking.