Complex sentence: The red fortified wines of the Banyuls are made from Grenache grapes, normally have an alcohol level between 16 to 17% and carry residual sugars in the 8 to 12% range.
Split into simpler sentences: The red fortified wines of the Banyuls are made from Grenache grapes. These wines tend to have an alcohol level between 16 to 17% with residual sugars in the 8 to 12% range.