One of the things that makes Orval unique is its 3 fermentations. A primary fermentation with an abbey yeast strain, a maturation with Brettanomyces, and finally, an addition of sugar and neutral yeast in the bottle for conditioning.
Unlike all other Trappist breweries, Orval produces only one variety of beer for the general public, with just 15% of its total production available for export.
Things have changed a great deal in a world predominantly dominated by men, as Trappist Abbey breweries have been for the last few decades.