VineAI: Wine Pairing LLM
How I Built an AI Sommelier That Delivered 300% ROI for Premium Restaurants
The Problem
Premium wine bars face a critical bottleneck: staff wine knowledge. Training sommeliers takes 2+ years and costs $50K+ per employee. Result? Missed upsell opportunities, inconsistent recommendations, and frustrated customers.
The average wine bar loses $30K annually from poor pairings and staff turnover. Customers spend less when servers can't confidently recommend wines.
The Solution
I built VineAI, an AI sommelier that combines natural language understanding with wine expertise to deliver personalized recommendations in real-time.
Technical Architecture
- Gemini 1.5 Pro for natural language understanding and conversational flow
- RAG pipeline with Pinecone vector DB containing 10K+ wine profiles
- FastAPI backend with sub-300ms response time
- Next.js customer interface with real-time recommendations
- Square POS integration for dynamic pricing and inventory
The Results
ROI in 6 months from increased wine sales
Increase in wine sales per table
Restaurants deployed across 3 countries
Recommendation acceptance rate
Technical Deep Dive
RAG Pipeline Architecture
The core innovation is a Retrieval-Augmented Generation pipeline that combines vector similarity search with LLM reasoning:
# User Input Processing
user_query = "I'm eating grilled salmon, budget $40"
embedding = embed(user_query) # Convert to vector
# Vector Search
similar_wines = pinecone.query(
vector=embedding,
top_k=5,
filter={"price": {"$lte": 40}}
)
# LLM Reasoning
recommendation = gemini.generate(
prompt=f"""
Customer: {user_query}
Matching wines: {similar_wines}
Provide personalized recommendation with:
1. Best match wine with reasoning
2. Tasting notes
3. Why it pairs with salmon
""",
temperature=0.7
)
Performance Optimization
- Caching layer: Redis for frequently requested pairings (90% cache hit rate)
- Embedding pre-computation: Wine profiles vectorized nightly
- Batch processing: Multi-table recommendations in single API call
- Edge deployment: Vercel Edge Functions for <100ms latency
Live Product

Live Demo: VinAI Match 2.0
Client Testimonial
"VineAI transformed our business. We went from servers avoiding wine recommendations to confidently upselling every table. Our wine revenue increased 35% in 3 months, and customer satisfaction scores jumped 20 points. It's like having a master sommelier at every table."
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