Jack Daniel's Single Barrel - Barrel Strength (64.5%) vs Mortlach 20 Year Old 1990 - Cask Strength Collection (Signatory)
Side-by-side comparison — price, ABV, scores, tasting notes, pros & cons.

Jack Daniel's Single Barrel - Barrel Strength (64.5%)
Jack Daniel's
★ 5.00
£70

Mortlach 20 Year Old 1990 - Cask Strength Collection (Signatory)
Mortlach
★ 5.00
£90
| Jack Daniel's Single Barrel - Barrel Strength (64.5%) | Mortlach 20 Year Old 1990 - Cask Strength Collection (Signatory) | |
|---|---|---|
| Distillery | Jack Daniel's | Mortlach |
| Region | — | Speyside |
| Country | America | Scotland |
| Type | Tennessee | Single Malt |
| ABV | 64.5% | 57.6% |
| Age | NAS | 20 yr |
| Price | £69.95 | £90.46 |
| Rating | 5.00/5 | 5.00/5 |
Jack Daniel's Single Barrel - Barrel Strength (64.5%)
Mortlach 20 Year Old 1990 - Cask Strength Collection (Signatory)
Jack Daniel's Single Barrel - Barrel Strength (64.5%)
Mortlach 20 Year Old 1990 - Cask Strength Collection (Signatory)
Quick verdict
Jack Daniel's Single Barrel - Barrel Strength (64.5%) is better value at £70 vs £90.
For beginners: Mortlach 20 Year Old 1990 - Cask Strength Collection (Signatory) is more approachable (40/100 beginner score).
Jack Daniel's Single Barrel - Barrel Strength (64.5%)
Pros
- +Balanced smoky character without being overwhelming
- +Better value for money
- +More affordable (£69.95 vs £90.46)
- +More widely reviewed by the community
Cons
- −High ABV (64.5%) — may need water
Mortlach 20 Year Old 1990 - Cask Strength Collection (Signatory)
Pros
- +Vibrant, fresh fruit character
Cons
- −High ABV (57.6%) — may need water
- −More expensive (£90.46 vs £69.95)
- −Lacks smoke character compared to the alternative
Who should buy Jack?
Jack Daniel's Single Barrel - Barrel Strength (64.5%) 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 Mortlach?
Mortlach 20 Year Old 1990 - 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.
Tasting notes
Only Jack Daniel's Single Barrel - Barrel Strength (64.5%)
Only Mortlach 20 Year Old 1990 - Cask Strength Collection (Signatory)
Where to buy
Jack Daniel's Single Barrel - Barrel Strength (64.5%)
Where to buy
The Whisky Exchange
Mortlach 20 Year Old 1990 - Cask Strength Collection (Signatory)
Where to buy
The Whisky Exchange