Mortlach 20 Year Old 1991 - Cask Strength Collection (Signatory) vs Rock Island Sherry Edition

Side-by-side comparison — price, ABV, scores, tasting notes, pros & cons.

Mortlach 20 Year Old 1991 - Cask Strength Collection (Signatory)Rock Island Sherry Edition
DistilleryMortlachRock Island
RegionSpeysideIsland
CountryScotlandScotland
TypeSingle MaltBlended Malt
ABV56.4%46.8%
Age20 yrNAS
Price£79.42£50
Rating5.00/55.00/5

Mortlach 20 Year Old 1991 - Cask Strength Collection (Signatory)

Smoke0/100
Sweetness53/100
Beginner40/100
Value63/100

Rock Island Sherry Edition

Smoke64/100
Sweetness47/100
Beginner50/100
Value100/100

Mortlach 20 Year Old 1991 - Cask Strength Collection (Signatory)

SmokySweetFruitySpicyWoodyFloral

Rock Island Sherry Edition

SmokySweetFruitySpicyWoodyFloral

Quick verdict

Rock Island Sherry Edition is better value at £50 vs £79.

For beginners: Rock Island Sherry Edition is more approachable (50/100 beginner score).

Mortlach 20 Year Old 1991 - Cask Strength Collection (Signatory)

Pros

  • +Vibrant, fresh fruit character

Cons

  • High ABV (56.4%) — may need water
  • More expensive (£79.42 vs £50)
  • Lacks smoke character compared to the alternative

Rock Island Sherry Edition

Pros

  • +Balanced smoky character without being overwhelming
  • +Better value for money
  • +More affordable (£50 vs £79.42)
  • +More widely reviewed by the community

Cons

  • Niche style — may not suit all palates

Who should buy Mortlach?

Mortlach 20 Year Old 1991 - Cask Strength Collection (Signatory) is for enthusiasts who appreciate cask-strength intensity. Best enjoyed with a few drops of water to open up the flavours. Not ideal for casual drinking or beginners.

Who should buy Rock?

Rock Island Sherry Edition suits whisky enthusiasts looking for a well-rounded, complex dram. It rewards those with some experience and an appreciation for Island character.

Tasting notes

Both taste of

SherriedDried Fruit

Only Mortlach 20 Year Old 1991 - Cask Strength Collection (Signatory)

Old WoodChocolateToasted

Only Rock Island Sherry Edition

SmokeySandyNutty

Where to buy

Mortlach 20 Year Old 1991 - Cask Strength Collection (Signatory)

Rock Island Sherry Edition

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