How to Calculate Wine by the Glass Pricing Without Eating Your Margin

The glass is the most profitable wine line in a restaurant. In theory. In practice, many restaurants lose margin without knowing it because by-the-glass pricing is done with a generic multiplier, without controlling waste, and without adjusting by bracket. The mistake is not serving wine by the glass. It is not knowing how much margin you are leaving on the table — literally.

The Problem with a Single Multiplier

Cost × 4. Cost × 5. It is the most used formula and the most widespread error. Why does it fail? Because each glass has a different role in your offering: - The entry glass should be accessible. Its function is to get the customer started with wine. Multiplier: 4-5x. - The mid-range glass is where the real margin is. Multiplier: 3.5-4x. - The premium glass sells experience, not volume. Multiplier: 2.5-3.5x. Using the same multiplier for all means overpricing the entry (losing sales) or underpricing the premium (leaving margin on the table).

The Real Formula: Cost + Waste + Positioning

Step 1: Real cost per glass Don't divide the bottle by 5 glasses. Divide by 4.5 to include the mandatory serving waste (overpour, spillage, end of bottle). Step 2: Add waste Depend on your system: - With Coravin or gas preservation: 3-5% waste. - With vacuum stopper: 8-12% waste. - Without system: 15-25% waste. Adjusted real cost = (Bottle cost / 4.5) × (1 + waste %) Step 3: Apply multiplier by bracket - Entry (cost < 3€): multiplier 4.5-5x. - Mid-range (cost 3-6€): multiplier 3.5-4x. - Premium (cost > 6€): multiplier 2.5-3.5x. Practical example | | Entry | Mid-range | Premium | |---|---|---|---| | Bottle cost | 5€ | 12€ | 22€ | | Cost per glass (/ 4.5) | 1.11€ | 2.67€ | 4.89€ | | + 10% waste | 1.22€ | 2.93€ | 5.38€ | | Multiplier | ×4.5 | ×3.8 | ×3.0 | | Selling price | 5.50€ | 11.00€ | 16.00€ | | Real margin | 78% | 73% | 66% |

The Glass vs. Bottle Ratio the Customer Calculates

The customer compares, consciously or unconsciously: - Glass at 8€, bottle of the same wine at 24€ → the glass seems expensive (3 glasses = bottle). - Glass at 6€, bottle at 35€ → the glass is attractive (almost 6 glasses = bottle). Reference: the glass price should be at most 20-25% of the bottle price of the same wine.

How Many Glasses and How to Rotate

| Venue type | Recommended glasses | |---|---| | Casual | 5-7 | | Fine dining | 8-12 | | Wine bar / hotel | 12-20 (with preservation) | | Multi-venue group | 6-8 base + 2-3 local | Rotation: minimum 2-3 new references per month. Keep the stars fixed, move underperformers.

6 Mistakes That Destroy Glass Margin

1. Same multiplier for all glasses. 2. Not accounting for waste weekly. 3. Not rotating in 3+ months. 4. Too many glasses without a preservation system. 5. Floor team without training on the by-the-glass offering. 6. Not distinguishing entry glass from premium glass in pricing.

Conclusion

The glass is your best sales and margin tool. But only if the pricing reflects reality: real cost, controlled waste, and differential multiplier by bracket. A restaurant that sells 30 glasses a day with correct pricing can gain between 150 and 300€ per month compared to one using a flat multiplier. Across a year, that is a direct improvement to the bottom line. If you want to calculate the real price of your glasses with data, [Winerim gives you margin, rotation, and waste by reference](/producto/winerim-core).