Scoring Overview

Gastro calculates comprehensive environmental scores for recipes and menu items using Life Cycle Assessment methodology.

Score Types

Climate Score (CO₂)

Greenhouse gas emissions measured in kg CO₂ equivalents per serving.

→ Climate Score methodology

Water Footprint

Water consumption across the supply chain, accounting for regional scarcity.

→ Water Footprint methodology

Animal Welfare

Assessment of production standards for animal-derived ingredients.

→ Animal Welfare methodology

Rainforest Impact

Deforestation risk evaluation for ingredients from tropical regions.

→ Rainforest methodology

Vita Health Score

Nutritional quality rating based on WHO dietary recommendations.

→ Vita Score methodology

Rating System

Gastro uses the Eaternity 5-symbol rating (A-E) where A is best:

Rating	Meaning
A	At least 50% better than average — climate-friendly
B	Better than average
C	Worse than average
D	Twice the average impact
E	Four times the average impact

→ Full rating system

Data & Methodology

Scores are calculated using the Eaternity Database and Life Cycle Assessment methodology:

• Eaternity Database — 950+ peer-reviewed ingredients
• External Data Sources — Ecoinvent, Agribalyse, ZHAW, and more
• LCA Methodology — Scientific foundation

Next Steps

• Chef Playbook — Practical strategies to reduce impact
• Guest Communication — Share scores with guests