Is having 2 similar wines always bad?

Not always. In fine dining with expert clientele, offering 2 Ribera from different producers can make sense. But in restaurants with 20-40 references, redundancy is usually a problem.

How do I detect cannibalization between glass and bottle?

If the same wine is available by the glass and bottle, that's not cannibalization (it's complementary). The problem is when you have 2 young reds by the glass splitting sales.

How often should I review for cannibalization?

At every monthly list review. It's a quick check: look at your risk clusters and verify there are no redundant references without performance.

Does Winerim detect cannibalization automatically?

Yes. Winerim identifies clusters of similar wines on your list and alerts you when it detects cannibalization patterns based on real performance.

Analytical guide

How to detect cannibalization between wines on your list

If you have 3 Ribera del Duero crianza in the same price range, they're not competing with the competition. They're competing with each other. Cannibalization is the invisible problem most wine lists have and fewest restaurants diagnose.

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1.What is cannibalization and why it matters
2.Signs your list has cannibalization
3.Step-by-step diagnostic methodology
4.How to decide which reference stays and which goes
5.Typical cannibalization cases
6.Anti-cannibalization checklist

What is cannibalization and why it matters

Cannibalization occurs when two or more wines on your list compete for the same guest, at the same moment, without offering clear differentiation.

The result: sales split between similar references instead of concentrating, none rotates enough, and stock multiplies unnecessarily. Cannibalization isn't having similar wines. It's having similar wines without a strategic reason. Direct impact: • Capital tied up in redundant references. • Lower average rotation for each affected reference. • Higher risk of dead stock. • Floor staff don't know which to recommend. • Guests freeze when they can't differentiate options.

Two Verdejo Rueda at €16 and €18 isn't diversity — it's confusion. The guest will almost always choose the €16 one.

Cannibalization costs real money: capital tied up in redundant stock and lost sales opportunities.

An average restaurant has 15-25% redundancy on its list without knowing it.

Signs your list has cannibalization

Before doing a formal analysis, look for these quick signals indicating probable cannibalization.

Two or more wines of the same style, region and price range (±20%). The clearest signal.

One reference sells well and a similar one barely moves. The first is 'stealing' sales from the second.

Floor staff always recommend the same wine when 2-3 similar options exist. The others are invisible.

You have accumulated stock of a wine that 'should sell' given its profile and price. Another similar wine is probably cannibalizing it.

When you ask the team the difference between two wines, they can't explain it. If they can't see it, neither can the guest.

Step-by-step diagnostic methodology

To detect cannibalization systematically, follow these 4 steps.

Step 1 — Group by profile: classify all wines by type (white, red, rosé), style (young, oak-aged, reserve), region and price tier.

Step 2 — Find clusters: identify groups with 2+ wines sharing type + style + price range (±20%). These are your risk clusters.

Step 3 — Compare performance within the cluster: for each cluster, check which sells most, which has better margin and which rotates worst. The worst performer is a candidate for removal.

Step 4 — Validate with the team: ask floor staff if they can explain the difference between wines in the cluster. If they can't, cannibalization is confirmed.

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How to decide which reference stays and which goes

When you confirm cannibalization, you need to decide which wine to keep.

It's not just about sales. Use these 5 weighted criteria. 1. Commercial performance (30%): sales in units and revenue. 2. Gross margin (25%): the one generating the most absolute profit per bottle. 3. Differentiation (20%): the one offering something no other wine on your list does. 4. Availability (15%): the one you can replenish easily and consistently. 5. Narrative (10%): the one with the best story for the floor.

Don't always remove the lowest seller. Sometimes it has better margin or more potential with active recommendation.

If two wines score equally, keep the one with the better story. Narrative sells.

When removing a wine from the list, don't discard it. Liquidate it at events, tasting menus or as a special glass.

Typical cannibalization cases

These are the most common cannibalization patterns we see in real restaurants.

Ribera vs Ribera: 3 Ribera del Duero crianza between €22 and €28. Solution: keep 1 in that range and introduce a Toro or Bierzo as an alternative.

Verdejo vs Verdejo: 2 Rueda Verdejo between €14 and €17. Solution: keep 1 and add a Godello or Albariño to diversify.

Glass vs glass: 2 young reds by the glass at €4 and €4.50. Solution: keep 1 young red and replace the other with a different profile.

Entry vs entry: 3 wines between €12 and €15 competing as 'the cheap option'. Solution: keep 2 max and move the third up or replace it.

Anti-cannibalization checklist

Before finalising your list (or at each monthly review), run this checklist.

✓ No more than 2 wines of the same type + style + region in the same price tier (±20%).

✓ Floor staff can explain the difference between each pair of similar wines in 15 seconds.

✓ Every reference has a 'list reason': why it's there and what it contributes that no other does.

✓ No risk cluster has a reference with fewer than 3 monthly sales.

✓ When adding a new reference, you verify it doesn't cannibalize an existing one.

✓ Each price tier has style diversity, not repetition of the same profile.

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Next step

Winerim detects cannibalization before it costs you money

Automatic cluster analysis, redundancy alerts and substitution recommendations based on real performance.