Last updated August 2026

Written by Jesse & Cassie, Wine Scribes — Jesse holds a degree in Viticulture & Enology from UC Davis and has made wine in Burgundy, Yarra Valley, California, Washington and the Douro Valley; Cassie holds WSET Level 2 with Distinction and assists Jesse with work in the vineyard and cellar.

Wine service is the part of the CMS Certified Sommelier exam that rewards floor experience over flashcards — and it’s also the part where candidates who’ve only studied from a book tend to lose easy points. Decanting technique, service order, glassware selection, and how to handle a corked bottle in front of a guest aren’t things you memorize the night before; they’re habits built from actually working a floor.

This 10-question quiz covers the core service scenarios the Certified exam tests: guest service order, Champagne opening technique, decanting rationale, ideal service temperatures, standard restaurant markup, and the correct professional response when a guest sends back a flawed bottle. If you’ve worked service, this will feel familiar. If you haven’t, treat every wrong answer as a note for your next shift.

CMS Certified — Wine Service

Practice questions on wine service for the CMS Certified Sommelier exam — glassware, decanting, service temperatures, table service, and corked wine response. For self-study purposes only.

In classical wine service, in what order should guests at a table be served? Whoever ordered the bottle first Youngest to oldest, alternating gender Host tastes first, then women guests, then men, host last Alphabetical by name

Why is decanting typically performed for older, aged red wines? To separate the wine from sediment that has formed during bottle aging To reduce the alcohol level To add extra oxygen and soften young tannins To warm the wine to serving temperature

When opening a bottle of Champagne, what is the correct technique to minimize spillage and the risk of the cork flying dangerously? Point the bottle at yourself and pull the cork with a corkscrew Warm the bottle in hot water first Shake gently first to release pressure, then pop the cork Point away from guests, remove foil and cage, hold the cork still and rotate the bottle

Which glass shape is generally considered best for aged Burgundy Pinot Noir? Narrow flute Large bowl with narrower rim ("Burgundy bowl") ISO tasting glass Small tulip

The waiter's friend or "sommelier knife" typically features which key components? A wine thermometer and a filter A wide flat blade and a bottle opener A cork extractor and a decanter funnel A serrated foil cutter, a corkscrew (worm), and a fulcrum lever

A restaurant's wine list is typically organized in what standard structure? Alphabetically by producer Grouped by food category recommendations By price, lowest to highest By color/style, then by region, then by producer or vintage

If a guest reports their wine is "corked," what is the correct professional response? Explain that all wines are meant to taste this way, and suggest they try another glass Apologize, remove the bottle, replace it with a fresh bottle of the same or a comparable wine, and log the incident for later reimbursement from the supplier Add ice to the wine to mask the flaw Explain the flaw is caused by their food and refuse to replace it

Standard restaurant markup on retail wine bottles typically ranges from what? 2.0× to 2.5× wholesale 2.5× to 4.0× wholesale (150–300% markup) 5× to 10× wholesale 1.0× to 1.5× wholesale (10–50% markup)

Ideal white wine service temperature is typically: Chilled but not icy (45–55°F / 7–13°C, cooler for lighter wines, warmer for fuller-bodied whites) Same as red wine (60–68°F / 16–20°C) Icy cold (32–38°F / 0–3°C) Warm — room temperature (68–72°F / 20–22°C)

A good rule of thumb for optimal wine storage in a professional cellar is: 70°F, 20% humidity, upright storage 40°F, 90% humidity, brightly lit 55°F (13°C), 55–75% humidity, dark, minimal vibration, bottles stored on their side 55°F, 30% humidity, at floor level

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Study Tips for CMS Certified — Wine Service

Know the classical service order cold: the host tastes and approves the bottle first, then wine is poured for women guests, then men, with the host served last. It’s an old-school convention the exam still tests, even though many modern restaurants serve by table position or seniority instead.

Decanting has two distinct purposes, and the exam expects you to know which applies when: separating an older wine from the sediment it throws as it ages, and aerating a young, tannic wine to soften it and open up aromatics. For Champagne, the correct opening technique is to point the bottle away from guests, remove the foil and cage, hold the cork still, and rotate the bottle — never the cork — to control the release.

Service temperatures follow a simple logic: reds are served warmer than whites, and within each color, lighter-bodied wines are served cooler than fuller-bodied ones. Standard restaurant markup on retail bottle pricing runs roughly 2.5x to 4x wholesale. And when a guest reports a corked wine, the correct response is always the same: apologize, remove the bottle without argument, replace it, and log the incident for supplier credit — never debate the guest.

Continue practicing with our other CMS Certified topic quizzes: Old World Regions, New World Regions, Spirits, Beer & Sake, and Food & Wine Pairing. Or test everything at once with the full-length Practice Exam #1 and Practice Exam #2. Back to the CMS Certified Sommelier hub.

What is the traditional wine service order tested on the Certified exam?

The host tastes first to approve the bottle, then wine is poured for women guests, then men, with the host served last. This is the classical order the exam tests, even though many modern restaurants serve by seniority or simply table position.

Why do sommeliers decant older red wines?

Primarily to separate the wine from sediment that forms naturally as red wine ages in the bottle. Decanting can also soften young, tannic wines through aeration, but for aged wines, sediment separation is the main purpose.

What’s the correct response when a guest says their wine is corked?

Apologize, remove the bottle without argument, replace it with a fresh bottle of the same or a comparable wine, and log the incident so it can be reported back to the supplier for credit. Never argue with a guest about a flawed bottle.

CMS Certified: Wine Service Practice Quiz

CMS Certified — Wine Service

Study Tips for CMS Certified — Wine Service