The white grape variety comes from Portugal, Synonyms are Cercial, Cercial do Douro and Serceal. Despite apparently indicative synonyms or morphological and name similarities must not be with the varieties Jampal or Sercial (Esgana Cão) can be confused. There are some varieties with different spellings. Some of these are independent varieties. According to in 2006 and 2007 DNA analysis there are the following findings (attention to "e" and "i" in the name):
The late-ripening vine is very susceptible to the wrong people mildew, to a lesser extent also for Botrytis and powdery mildew. It produces fresh, acidic white wines mainly for blending, which are also used for sparkling wine production. The variety is mainly in the field Douro, but also in the areas Alentejo. Bairrada. dão and Tejo grown. The Portuguese acreage in 2010 was 379 hectares.
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012