--- name: service-protocol description: > Apply correct wine service technique — serving temperatures by style, decanting decisions (aeration vs sediment separation), glassware selection philosophy, opening techniques for still and sparkling wine, and formal restaurant service protocol based on CMS Service Standards. Use for any question about how to properly serve or present a wine. metadata: author: nirav version: "1.0" compatibility: Designed for Claude Code --- # Service Protocol — The Ritual **Type:** Knowledge **Suite:** Bacchus ## Description The complete execution layer for wine service: serving temperatures by style, decanting decisions and techniques (aeration vs. sediment separation), glassware philosophy, opening techniques for still and sparkling wines, and formal restaurant service protocol. Prioritizes practical precision — the most common service mistakes are temperature errors and unnecessary or absent decanting — with the rationale to understand why each step matters. --- ## Serving Temperatures The most violated rule in wine service. Temperature is not aesthetic preference — it is the primary variable controlling how a wine expresses itself. Too cold: volatile aromatics are suppressed and the wine smells and tastes of almost nothing. Too warm: alcohol volatilizes and dominates everything, turning the aromatic profile harsh and flat. | Style | Ideal Range | Common Mistake | |---|---|---| | Sparkling NV (Champagne, Cava, Prosecco) | 6-9°C (43-48°F) | Served too warm (18-20°C) — loses freshness, goes flat faster | | Sparkling Vintage / Prestige Cuvée | 9-11°C (48-52°F) | Over-chilled — suppresses the complexity that justifies the price | | Light whites (Muscadet, Pinot Grigio, Vinho Verde) | 7-10°C (45-50°F) | — | | Aromatic whites (Riesling, Gewürztraminer, Viognier, Albariño) | 8-12°C (46-54°F) | Often over-chilled — aromatic expression requires moderate temperature | | Full whites (white Burgundy, white Rhône, oaked Chardonnay) | 12-14°C (54-57°F) | Served refrigerator-cold (4°C) — texture collapses, oak seems harsh | | Rosé | 8-12°C (46-54°F) | — | | Light reds (Beaujolais, Pinot Noir, Gamay, Schiava) | 13-15°C (55-59°F) | Served at room temperature (20-22°C) — alcohol dominates, loses freshness | | Medium reds (Rioja Reserva, Chianti Classico, Côtes du Rhône) | 15-17°C (59-63°F) | — | | Full reds (Barolo, Brunello, Napa Cabernet, Barossa Shiraz) | 17-19°C (63-66°F) | Served at warm room temperature — alcohol becomes the dominant impression | | Fortified dry (Fino Sherry, Manzanilla, dry Sercial Madeira) | 7-10°C (45-50°F) | Served at room temperature, which destroys their freshness and saline delicacy | | Fortified sweet (Ruby/Tawny Port, sweet Sherry, sweet Madeira) | 15-18°C (59-64°F) | — | **The room temperature myth:** "Room temperature" was encoded into wine service advice when European rooms were 15-18°C. A modern heated home or restaurant at 20-22°C is too warm for any wine. Treat "room temperature" advice as historical artifact and serve accordingly. **Practical calibration:** - White and rosé wines taken directly from a refrigerator set to 4°C should be allowed 10-15 minutes before serving full whites and aromatic whites - Light reds benefit from 20 minutes in the refrigerator before serving — restaurant cellars are often too warm - Full reds: check whether the storage environment is actually at cellar temperature. If stored at room temperature, serve slightly below the ideal range knowing the wine will warm in the glass **Temperature rise in the glass:** expect any wine to rise 2-4°C during a meal. Serve 1-2 degrees below the ideal range if the table is warm or service will be extended. --- ## Decanting Decisions Decanting serves two distinct purposes that require completely different techniques. Confusing them is one of the most common professional service errors. ### Purpose 1: Aeration (Young, Tannic Wines) **Objective:** expose the wine to oxygen to soften tannin, open primary fruit, and release reduction or tight structure. **Candidates:** - Young Barolo and Brunello (under 10-12 years): tight, austere Nebbiolo needs significant air time - Young Northern Rhône Syrah (Hermitage, Côte-Rôtie under 8-10 years): often reductive when first opened - Young Napa Cabernet and Bordeaux (under 8 years) - Any wine showing reduction (struck match, rubber, or sulfur aromas on opening) **Technique:** - Pour into a clean, dry decanter with a wide base — maximum surface area - Pour with deliberate splash — agitate to maximize air contact - Allow 1-3 hours depending on age and structure. A 2-year-old Barolo may need 3 hours. A 7-year-old Barolo may need only 1-1.5 hours. - **Test periodically:** taste every 30-45 minutes. The wine is ready when primary fruit is expressive and open, tannin feels softer and less angular, and any reduction has blown off. Stop at this point — over-decanting flattens the wine. ### Purpose 2: Sediment Separation (Old Wines) **Objective:** physically separate grape-derived precipitate (potassium bitartrate crystals, polymerized tannin-pigment complexes) from the wine before service. Sediment is harmless but texturally unpleasant and signals to guests that the wine was improperly handled. **Candidates:** any wine over 15 years with potential sediment; Vintage Port (essentially always); old red Bordeaux, Burgundy, and Barolo from serious producers and vintages. **Technique:** 1. **Stand the bottle upright 24-48 hours before service.** Sediment that has accumulated along the bottom in horizontal storage needs time to resettle to the base. Do not skip this step — no decanting technique compensates for a bottle that hasn't been stood up. 2. **Prepare:** clean dry decanter, bright light source (candle or LED flashlight), clean cloth. 3. **Open the bottle carefully.** Do not agitate. Remove the cork smoothly without tilting. 4. **Position the light source** behind or beneath the neck of the bottle. 5. **Pour slowly, in one continuous, controlled movement.** Tilt the bottle gradually, never stopping and starting (stopping re-mixes the sediment). Watch through the neck as you pour — sediment will be visible moving toward the shoulder. 6. **Stop when sediment reaches the shoulder.** You may lose 1-2 ounces — acceptable and professional. 7. **Never shake, agitate, or tilt back** once the bottle is vertical. **The double decant:** pour through sediment separation into a clean decanter to separate sediment, then rinse and dry the original bottle, and pour the decanted wine back. Returns the wine to its original vessel for presentation elegance. Appropriate for formal service with very old bottles. ### When NOT to Decant - **Fragile, very old wines (30+ years, especially delicate Burgundy):** these wines may have only 30-60 minutes of life once opened. Aggressive decanting can compress that window to nothing. Open the bottle, pour small amounts into the glass, and let each guest's glass breathe naturally. Re-cork if pausing. The wine's fragility demands restraint. - **Fresh, aromatic whites and sparkling wines:** no benefit. CO₂ is lost from sparkling. Delicate aromatics dissipate without reciprocal benefit. - **Wines showing reduction:** aeration is the solution — decant briefly with aeration technique, but monitor. If reduction is very light, 15-20 minutes is sufficient. Over-decanting a reductive wine can turn it flat. --- ## Glassware The philosophy of glassware is concentration and delivery: the bowl's shape concentrates aromatic compounds toward the nose and delivers wine to a specific zone of the palate on entry. **Large-bowled (Bordeaux/Cabernet style):** For Cabernet Sauvignon, Merlot, Bordeaux blends, full-bodied tannic reds. The large surface area allows greater evaporation of volatile aromatics. The wider bowl lets tannic wines breathe in the glass. Delivers wine to the full palate with generous room for swirling. **Medium-bowled, tulip-shaped (Burgundy/Pinot Noir style):** For Pinot Noir, Nebbiolo, delicate red varietals. Narrower at the top than at the widest point to concentrate the more delicate, volatile aromatics toward the nose rather than letting them dissipate. The tighter rim also slows the wine's approach to the nose, allowing subtler secondary and tertiary aromas to emerge. Often misused — many serve Burgundy in a glass that's too large and flared. **Champagne flute (traditional):** Elongated and narrow: preserves CO₂ by minimizing surface area. Creates the visual "bead" effect (chain of bubbles rising). **The problem:** virtually no aroma reaches the nose. The flute sacrifices all sensory complexity for visual effect and bubble preservation. Appropriate for casual sparkling service where freshness and bubbles are the primary goal. **Champagne white-wine glass (modern somm preference):** A standard white wine glass — or specifically shaped Champagne wine glasses (Zalto Champagne, Riedel Champagne) with a tulip bowl. Allows the full aromatic complexity of Vintage Champagne and Blanc de Blancs to express itself. Bubbles are still present and visible. The trade-off (slightly faster bubble dissipation) is worth the aromatic gain for quality sparkling. **Coupe (wide, shallow saucer):** Fashion has made this the cocktail-party default. From a wine perspective: wide surface area loses CO₂ rapidly, no concentration of aromatics, wine warms quickly. Purely aesthetic. Never use for Vintage Champagne. Acceptable for sparkling cocktails and casual parties where the aesthetic matters more than the wine. **White wine glass (standard):** Narrower than red wine glasses, preserves delicate aromatics, natural resting position delivers wine slightly toward the front-middle of the palate (appropriate for acid-forward whites). **ISO tasting glass:** Universal international standard for blind tasting (ISO 3591). Removes glassware as a variable — every taster uses an identical vessel. Optimal for evaluation; not ideal for the pleasure experience of a great wine. **Practical verdict:** A single high-quality universal glass outperforms a collection of cheap varietal-specific glasses. Recommended: Zalto Universal (exceptionally thin, light, wine-enhancing), Riedel Vinum Burgundy (versatile across red and white), Spiegelau Performance. The glass must be: clean (zero soap residue or dishwasher odor), polished (no water spots), unchipped, and stored upright rather than inverted (inverted storage traps stale air in the bowl). --- ## Opening Techniques ### Still Wine (Waiter's Friend / Lever Corkscrew) 1. **Cut the foil** cleanly below the second ridge (the lower lip ring on the bottle). This keeps drips off the foil when pouring. A straight, clean cut rather than a torn edge. 2. **Wipe the neck** with a clean cloth. 3. **Insert the worm (helix)** at a slight angle into the center of the cork, then straighten as you turn. Do not go fully through — leave approximately one turn visible. 4. **Use both lever positions** on a waiter's friend: first lever gives partial lift, second lever completes extraction. This reduces the risk of breaking an old or fragile cork. 5. **Extract without twisting** — pull straight up using the lever, do not rotate the bottle. 6. **Remove the cork** with a soft "sigh" rather than a loud pop (sound of air, not impact). 7. **Smell the cork:** check for obvious TCA (wet cardboard, musty, "corked") or other off-aromas. This is a screening step, not a guarantee — TCA can be subtle, and smelling the cork is not diagnostic. 8. **Wipe the neck** again after extraction. 9. **Present and pour** a taste for the host. ### Old Wine with Fragile or Crumbling Cork (Ah-So / Two-Pronged Puller) The Ah-So works by sliding two thin, flexible blades alongside the cork (rather than penetrating it), then using a twisting pull-and-rock motion to extract it without corkscrew penetration. Essential for corks 20+ years old that may have dried, compressed, or become friable. **Technique:** 1. Insert the longer blade first, then the shorter. Work each blade down along the side of the cork with gentle back-and-forth rocking. 2. Once both blades are seated at least two-thirds down the cork's length, grip the handle and use a combined clockwise twist + upward pull motion. 3. Rock gently side-to-side while pulling. Do not jerk. 4. Extract slowly and steadily. **The Durand** combines a standard worm (for structural grip) with an Ah-So's two prongs — the best tool for very old, high-value bottles where cork failure would be catastrophic. **Broken cork:** if the cork breaks, use the remaining fragment with an Ah-So, or carefully push the fragment into the bottle and decant through a fine mesh strainer. Present the fragment to the host with explanation — a broken cork is not necessarily a sign of a faulty wine. ### Sparkling Wine Opening protocol for Champagne and all cork-finished sparkling wines: 1. **Remove the foil** fully to expose the cage and cork. 2. **Keep thumb on the cork at all times** after the foil is removed. Pressure in a Champagne bottle is approximately 90 psi — equivalent to a truck tire. An unsecured cage-released cork can travel at significant velocity. 3. **Untwist the cage** with exactly six half-turns (standard cage). Keep your thumb covering the cork during this process. 4. **Hold the cork firmly** in one hand, bottle in the other at approximately 45 degrees. 5. **Rotate the bottle, not the cork.** The bottle turns while the cork remains stationary in your grip. This gives you control — the cork moves relative to the bottle, not the other way around. 6. **Allow the pressure to ease the cork out** rather than pulling. A controlled, near-silent "pfff" is the ideal: minimal CO₂ loss, maximum control, no spillage. 7. **The quieter the opening, the better the service** — a loud dramatic pop wastes CO₂ and signals inexperience. 8. **Pour immediately** at a slight angle to prevent overflow, filling to two-thirds of a flute or one-third of a white wine glass. **Sabrage (saber opening):** A decorative technique using a heavy blade to shear the neck of the bottle at the seam, using the bottle's internal pressure as the force. Theatrical, effective when done correctly, appropriate for celebration service. Not a practical technique for table service. --- ## Formal Service Protocol (Restaurant) The sequence that constitutes professional wine service in a restaurant context: **1. Presentation:** Bring the bottle to the table. Hold at the base and mid-label. Present the label facing the host. Announce: producer name, wine name, and vintage. Example: "Your 2015 Château Léoville-Barton, Saint-Julien." Pause for host acknowledgment before proceeding. **2. Opening:** Perform at the table, in view of the host. This is a trust gesture — the guest confirms the wine is opened correctly, the seal is intact, and nothing is substituted. **3. Pour a taste to the host:** Approximately one ounce — enough to assess, not enough to fill the glass. Pour on the host's right side. Pause while the host evaluates. The host is not evaluating personal preference (that was decided when ordering); they are assessing whether the wine is faulty or obviously different from what was ordered. A wine that is corked, oxidized, or TCA-affected should be returned; a wine that is simply not to personal taste should not be. **4. Service order after approval:** Traditional formal sequence: ladies first (moving clockwise), then gentlemen, host last. In contemporary service, the gender-based convention is often relaxed — a common modern approach is to serve clockwise from the host's right, host last regardless. Follow the establishment's convention. **5. Pour level:** - Reds: fill to approximately one-third of the glass. This leaves sufficient room for swirling and aroma concentration. - Whites and rosé: fill to approximately one-half of the glass. - Sparkling: fill to approximately two-thirds of a flute, or one-third of a white wine glass. - Never fill to the brim. **6. Refills:** Monitor table glasses and refill before they are fully empty. Do not over-pour. A guest who is not drinking should have their glass covered with a hand or indicate refusal — do not pour over an objection. **7. Temperature management:** Return white wines, rosé, and sparkling wines to an ice bucket between pours. If no ice bucket is present, keep the bottle off the table in a cool position. Full reds: leave on the table. **8. Second bottle (same wine, different bottle):** Present the new bottle. Announce it even if identical — "Another bottle of the same" is sufficient. Check the vintage on the label. If the vintage differs, inform the host: "This is the 2016 rather than the 2015 — the remaining bottles in our cellar are this vintage. Would you like to proceed?" Do not assume the guest is indifferent to vintage differences. **9. Corked or faulty bottle:** If the host indicates a fault, take the bottle, smell the wine yourself without theatrics, and make a judgment. If the fault is confirmed: apologize, remove the bottle, bring the replacement. Do not argue with the host about whether the wine is corked — the guest's experience is the standard, not the sommelier's diagnosis. If the fault is uncertain but the guest is unsatisfied, replace without debate.