Originally the bean is from the American continent.
The bean produced in La Granja is called the Spanish Bean (Phaseolus coccineus).
There is a likeness between the beans of La Granja and Vulgaris.

The Judion de la Granja takes advantage by being cultivated in a very good exploitation farm close to the mountain chain of Guadarrama. Which involves an abundance of water from several streams for a rich soil.

This vegetable contains vitamins A and B, potassium, phosphorus, magnesium, calcium, iron and carbohydrate. A perfect nutrition wholefood. The ratio is 100 grams for 85 beans.
Its flavour is unrepeatable, it must be eaten quite firm. It melts in the mouth with a flavour and a delightful savour.