Royal Lochnagar 20 Year Old 1991 Cask 374 - Cask Strength Collection (Signatory) vs Islay #4 11 Year Old (That Boutique-y Whisky Company)
Side-by-side comparison — price, ABV, scores, tasting notes, pros & cons.

Royal Lochnagar 20 Year Old 1991 Cask 374 - Cask Strength Collection (Signatory)
Lochnagar
£66

Islay #4 11 Year Old (That Boutique-y Whisky Company)
That Boutique-y Whisky Company
★ 5.00
£67
| Royal Lochnagar 20 Year Old 1991 Cask 374 - Cask Strength Collection (Signatory) | Islay #4 11 Year Old (That Boutique-y Whisky Company) | |
|---|---|---|
| Distillery | Lochnagar | That Boutique-y Whisky Company |
| Region | Highland | — |
| Country | Scotland | Scotland |
| Type | Single Malt | Single Malt |
| ABV | 54.8% | 48.8% |
| Age | 20 yr | 11 yr |
| Price | £66.28 | £66.95 |
| Rating | — | 5.00/5 |
Royal Lochnagar 20 Year Old 1991 Cask 374 - Cask Strength Collection (Signatory)
Islay #4 11 Year Old (That Boutique-y Whisky Company)
Royal Lochnagar 20 Year Old 1991 Cask 374 - Cask Strength Collection (Signatory)
Islay #4 11 Year Old (That Boutique-y Whisky Company)
Quick verdict
Islay #4 11 Year Old (That Boutique-y Whisky Company) is rated higher (5.00 vs 0.00).
Royal Lochnagar 20 Year Old 1991 Cask 374 - Cask Strength Collection (Signatory) is better value at £66 vs £67.
For beginners: Royal Lochnagar 20 Year Old 1991 Cask 374 - Cask Strength Collection (Signatory) is more approachable (50/100 beginner score).
Royal Lochnagar 20 Year Old 1991 Cask 374 - Cask Strength Collection (Signatory)
Pros
- +More affordable (£66.28 vs £66.95)
- +Longer maturation (20 vs 11 years)
- +Rich oak and wood spice complexity
Cons
- −High ABV (54.8%) — may need water
- −Lower community rating (0.0 vs 5.0)
- −Lacks smoke character compared to the alternative
Islay #4 11 Year Old (That Boutique-y Whisky Company)
Pros
- +Balanced smoky character without being overwhelming
- +Better value for money
- +Higher community rating (5.0/5)
- +More widely reviewed by the community
Cons
- −More expensive (£66.95 vs £66.28)
Who should buy Royal?
Royal Lochnagar 20 Year Old 1991 Cask 374 - 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 Islay?
Islay #4 11 Year Old (That Boutique-y Whisky Company) suits whisky enthusiasts looking for a well-rounded, complex dram. It rewards those with some experience and an appreciation for Single Malt character.
Tasting notes
Only Royal Lochnagar 20 Year Old 1991 Cask 374 - Cask Strength Collection (Signatory)
Only Islay #4 11 Year Old (That Boutique-y Whisky Company)