Whisky in Oloroso Sherry casks
1. The Origin
The Oloroso sherry has its origins in the south west of Spain. It is a fortified wine with 17-22%and a content of 0-5 grams per liter. With these stats the Oloroso is defined as a dry wine. But many of the Sherry blenders sweeten the wine to make it more luscious and syrup like. Within the wine the Oloroso is handled as a very nutty sherry with dark flavours.
2. Production and post treatment
Sherry is matured in casks. The ages differ from no sherries up to 30 years of age. The wood used in the barrels is quercus alba, the . Oloroso is not a natural product by . After the alcoholic fermentation the sherry undergoes fortification (adding grape spirit aka Brandy). The ABV has to be raised above 17% for Oloroso. This prevents the rest of the dead to produce the protective layer of flor (A white layer on top of the sherry in the ). This results in an oxidative of the Sherry. Many of the Sherry bands are matured in the Solera maturation process in which the content of several casks is mixed together in Solera vats. After a marrying period of several month part of the batch is filled into bottles. The missing Sherry in the Solery vat is replaced by fresh Sherry and the mixing starts anew.
3. Effect on the Taste
Whiskies matured in Oloroso casks are usually taking up the dark flavours and the nuttiness. The dark flavours manifest in of figs, raisins, and many more fruits. Most of the connoisseurs also find the Oloroso matured whiskies more oily and smooth than other whiskies.
4. Effect on the Colour
The Oloroso is very dark after the normal fermentation and maturation. This usually results in a darker and is very favorable for the whisky.
However the dark colour of the sherry is not always favourable in the sherry business. The brand Bristol Cream is said to lighten its sherry by putting it through a charcoal filter. This process is also done by the Jack Daniels . But JD filters its spirit before the maturation to mellow the spirit and not touch the dark colour.
5. Whisky Examples
Most of the whiskies are only sherry casks for more than 10 years are usually very intense and remind more of a liqueur than a whisky.in Oloroso . There are just a handful of whiskies that are fully matured in these . Whiskies that are matured in Oloroso
A very sherry sided whisky that has been matured in Oloroso sherry casks. It is very dark for an uncoloured whisky. You taste a very sweet that reminds you of christmas.
This Dalwhinne was finished in Oloroso sherry casks. It is just as dark as the Glenfarclas, but this comes from the colour that was added. However this time the dark fruits are combined with some and also the oak tones come through.
The 18 years is one of the whiskies that has a light whisky very liqueur like.and the addition of the Oloroso character makes the