‘We don’t know what they are, there are more and more of them around, we used to call them ‘the bastard malts’, they often come with unlikely stories, but of course they may be very good.’ Serge from whiskyfun.com

‘There are a number of bottlings that don’t carry the name of a distillery, often carrying the name of an independent bottler’s label instead. It is thought that distilleries like to release some bottles like this, without using the name and therefore using a different marketing strategy. It is also believed that some independent bottlers reach agreements with distilleries to brand the whisky this way also. There is always a lot of guesswork with these undisclosed bottlings, some easier than others to identify.’ thewhiskyvault.com

‘Sometimes the name of the distillery that produced a certain whisky cannot be mentioned on the label. However in some cases the bottler gives us enough hints to make an educated guess.’ whiskynotes.be

‘They say that an undisclosed sherried Speyside malt is likely to be a Glenfarclas but I have no idea if that’s true in this case (or in most cases). It’s the kind of thing that’s in the interest of bottlers to have people believe (just as every undisclosed peated Islay is said to likely be a Lagavulin). As far as I know there’s no rule saying that a bottler has to disclose the name of a distillery and so someone who had their hands on a nice cask from a distillery with a poor reputation might well benefit by taking the name off the label and letting buyers fill in whatever they’d like to think it is.’ myannoyingopinions.com

ARTICLE: Bastard Malts 1/2 – When You Don’t Know What’s in the Bottle – dramming.com