GSLX-AMB-2026-001 · Signature
The Amuse · Signature Programme
Cold. Clean. One bite.
The greeting the kitchen sends. Aged mignonette, wild oyster, a pearl of osetra. Ready in eight seconds. Poured in one.
Oyster · Ruby Mignonette
Sussex rock oyster · aged red-wine shallot mignonette · fresh horseradish snow · single osetra caviar pearl · seaweed salt.
Yield1piece
Service8sec
Prep Time15min
SkillCDP · Raw
Cost/Piece£3.40
Sell£12.00
GSLX-AMB-2026-001 · HERO
Sussex rock oyster · aged mignonette · horseradish snow · osetra
Shucked à la minute
4 °C at pass
Osetra spoon
Single pearl
Horseradish snow
Shell knife · never chip
01
Provenance & Sourcing
SpeciesRock oyster · Crassostrea gigas
OriginColchester · Sussex · UK
GradeNo. 2 · 80–100 g whole
SeasonSeptember · April (months with an R)
DeliveryDaily · pre-service · never held over
CaviarOsetra · farmed · Kaviari · Malossol
VinegarAged red-wine · 12 months · Champagne base
SupplierWright Bros. · MSC + BIM certified
02
Mise en Place
Four components. Oyster on ice, shallot vinegar, horseradish snow, caviar spoon. All to hand.
MISE 01The Oyster
MISE 02Mignonette
MISE 03Horseradish
MISE 04Osetra
03
Method — four moves
Shuck. Dress. Crown. Pass. Total elapsed time from ticket to plate: forty seconds.
01
METHOD 01Shuck
02
METHOD 02Dress
- Shuck. Oyster on cloth, hinge to the palm. Enter with the tip of the shell knife, twist once, sever the adductor. Preserve every drop of liquor. Loosen the meat.
- Dress. ½ teaspoon of aged mignonette across the oyster — never in a pool at the edge. The vinegar should sit under the meat, not on top.
- Crown. Grate a fine horseradish snow across the oyster (three passes maximum). Place a single osetra pearl at the widest point of the shell, using the mother-of-pearl spoon.
- Pass. Onto crushed ice or a chilled slate. Seaweed-salt sprinkle around the shell (not on the oyster). No lemon. No pepper. Never.
04
Critical Control Points
| CCP | Standard | Verification |
|---|---|---|
| Oyster core temp | < 5 °C shell to pass | Ice bed · verified pre-service |
| Shell integrity | Closed on tap · dead ones discarded | Kitchen check · every oyster |
| Delivery window | < 24 h from bed to service | Delivery docket signed daily |
| Caviar temp | –2 °C to +2 °C · never frozen | Dedicated caviar fridge · logged |
| Shucker hygiene | Fresh cloth per service · glove-optional | Bar prep log |
05
Sub-Recipes & Components
Aged mignonetteGSLX-SUB-MIG-001 · 48-hour minimum · shallot brunoise
Horseradish snowGSLX-SUB-HS-002 · Micro-grated · same-day root
Seaweed saltGSLX-SUB-SS-003 · Dried Cornish sea lettuce + Maldon
06
Classification
CategoryAmuse-bouche · raw · one-bite
Menu PositionCourse 1 of 5 · pre-menu greeting
ComplexityTier 1 · Confident CDP with shucking discipline
PlateCrushed ice on slate coupelle · 10 cm
Serve Temp4 °C · never on warm plate
Prep AheadMignonette 48 h · everything else à la minute
07
Ingredients — Yield 1 piece · scale × covers
| Component | Measure | Standard / Allergen |
|---|---|---|
| Sussex rock oyster · No.2 | 1 piece | Live shell · closed tap · Molluscs |
| Aged mignonette | ½ tsp (2.5 ml) | Sub-recipe GSLX-SUB-MIG-001 · Sulphites |
| Fresh horseradish · grated | 3 passes microplane | Peeled same-day only |
| Osetra caviar · Kaviari Malossol | 1 pearl (~0.4 g) | Mother-of-pearl spoon · Fish eggs |
| Seaweed salt | Trace · shell rim only | Sub-recipe GSLX-SUB-SS-003 |
| Crushed ice | Bed of 100 g | Filtered water · block-crushed |
08
Presentation & Service
VesselSlate coupelle · 10 cm · pre-chilled
LayoutOyster centred on crushed ice bed · hinge at 6 o'clock
Caviar PositionWidest point of the meat · never on lip
GarnishSeaweed salt · shell rim only · never on flesh
CutleryNone · guest lifts shell to lips
Service NotePass within 30 s of shuck · nothing wilts faster than fresh oyster
09
Wine Pairing
RecommendedMuscadet Sèvre-et-Maine · sur lie · Domaine de la Louvetrie
StyleMelon de Bourgogne · saline · unoaked
Also PairsChablis · fino sherry · Champagne blanc de blancs
By the GlassPicpoul de Pinet · Languedoc
Non-AlcoholicCucumber + verjus + Cornish tonic
Never WithRed wine · oaked white · anything sweet
The wine washes the mignonette, never fights it. Salinity meets salinity. The caviar cushions both.
10
Substitutions & Property Adaptations
| Original | Property / Reason | Substitution |
|---|---|---|
| Sussex rock oyster | Manila / SG · sourcing | Local Pacific rock oyster · same size grade |
| Osetra caviar | Warsaw · MOQ constraints | Trout roe · same volume · sub cost £0.30/pearl |
| Aged mignonette | New property · pre-programme | Bottled Champagne vinegar + shallot · until 48-h aged batch ready |
| Fresh horseradish | Any · out of season | Frozen horseradish (Poland import) · never bottled |
11
Training Notes & Common Failures
- ×Chipped shell. Knife entered at wrong angle. Always at the hinge — never the lip. Practice on 100 oysters before service.
- ×Lost liquor. Oyster tilted during shuck. Level cloth, level palm, level shell. Every drop matters.
- ×Too much mignonette. Dressing pools at shell edge = failure. Half a teaspoon UNDER the meat, never over.
- ×Caviar placed on lip. Osetra on the shell rim looks amateur and slides off. Widest point of the flesh, always.
- ×Ice melts before pass. Coupelle not pre-chilled. Coupelles held in freezer at –5 °C, out only at ticket call.
12
Cost & Margin
| Line | Cost | Notes |
|---|---|---|
| Sussex rock oyster · No.2 · £1.40/piece | £1.40 | Wright Bros. daily delivery |
| Aged mignonette · 2.5 ml | £0.08 | House-made, 48h aged |
| Osetra caviar · 0.4 g · £3,600/kg | £1.44 | Kaviari Malossol |
| Horseradish + seaweed salt | £0.12 | Pro-rata |
| Ice + slate + service | £0.36 | Amortised |
| Total cost/cover | £3.40 | 28.3% of sell |
| Sell price | £12.00 | Signature amuse · included in tasting menu |
| Gross margin | 71.7% | Category-standard for caviar-crowned amuse |
13
Allergens & Compliance
Molluscs
Fish eggs
Sulphites (mignonette)
Live shellfish register maintained · Origin declared on menu · Guest advised of raw preparation
14
Version History
| Version | Date | Author | Change |
|---|---|---|---|
| v1.0 | 2026-08-19 | Edward Phillips Blanco | Initial signed release · Volume I MMXXVI |
GSLX-AMB-2026-001 · Recipe Codex™ · Volume I · MMXXVI
Signed · Edward Phillips Blanco · N° 001