(Decanter) - As the 2011 Bordeaux harvest comes to an end, oenologists describe it as a rollercoaster marked by wild fluctuatons in the weather. The rapidly-changing weather patterns and temperatures led to a risk of botrytis, and many properties have harvested grapes that did not reach full phenolic ripeness. As many experts have said, it will be a ‘winemaker’s vintage’, with a good deal of work necessary in the winery. ‘It will be a vintage marked by extremes, at times too cold, at times too hot; at times too humid, at times too dry,’ Bordeaux oenologist Nicolas Vivas told Decanter.com.