The white grape variety comes from Portugal. Synonyms are Cercial, Cercial do Douro and Serceal. Although synonyms or morphological and name similarities seem to indicate this, it should not be confused with the Jampal or Sercial (Esgana Cão) varieties. There are some varieties with different spellings. Some of these are independent varieties. According to DNA analyses carried out in 2006 and 2007, the following findings were made (note the "e" and "i" in the name):
The late ripening vine is very susceptible to downy mildew and, to a lesser extent, to botrytis and powdery mildew. It produces fresh, acidic white wines mainly for blending, which are also used for sparkling wine production. The variety is grown mainly in the Douro area, but also in the Alentejo, Bairrada, Dão and Tejo areas. The Portuguese cultivated area in 2010 was 379 hectares.
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012