That Boutique-y Whisky Company Blend #1 26 Year Old Batch 4
A single malt in all but name.
'Teaspooning' casks of whisky is a practise that became common for larger distilleries to protect their names from independent bottle releases. It involves opening up a cask and adding a very small amount of a different malt to the cask, hence creating a blend.
Batch #4 from TBWC is from a very well known family run Speyside distillery and is a tremendous dram at a great price.