# Lesson 5.1 · Nutri-Score, GI, GL, allergens

- Link: https://thomasalbert.fr/en/courses/get-started-with-chefbase-course-1-discovery/lessons/lesson-5-1-nutri-score-gi-gl-allergens/
- Published: 2026-11-11T12:56:31+01:00
- Author: Thomas Albert

ChefBase calculates the indicators of each sheet from its ingredients.

 1. **At the top of the sheet:** Nutri-Score, Eco-score, GI, GL, kcal and allergens.
 2. **Click a letter:** the “How it is calculated” panel opens.
 3. **Read the panel:** the official method point by point, the data coverage of the
    recipe, and a tip to gain a letter.

**Key points:**

 * **GI colours:** green up to 55, orange from 56 to 69, red from 70.
 * **Estimated score:** marked “estimated” below 99% data coverage.

![The indicators at the top of the sheet](https://thomasalbert.fr/wp-content/uploads/
2026/11/c1en-slide-29.jpg)

![How it is calculated](https://thomasalbert.fr/wp-content/uploads/2026/11/c1en-
slide-30.jpg)