Online croissant course: sourdough base

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Laminate a classic croissant, a bicolour chocolate croissant and a pineapple pastry on a sourdough base, with Yohan Ferrant, head of the Baking School Barcelona Sabadell.
- 9 lessons
- 1 hr 50 min
- Viennoiserie
- Advanced
Rated 4.8 ★ by 60.2K App Store users · App of the Day in 120+ countries
What you'll learn
9 lessons · 1 hr 50 min total
At the end of this course you will be able to:
Laminate the dough into a 40 x 20 cm rectangle with butter for tourage at 30% of its weight.
Colour a 20 x 20 cm sheet of croissant dough with 5 to 10% cocoa and lay it over the laminated dough for a bicolour croissant.
Finish baked croissants with a glossy syrup of sugar and water, with optional edible gold.
Cook a vanilla pastry cream and set it into cores for the pineapple pastry.
About this class
This online croissant course treats viennoiserie as the end of a fermentation path. Lessons #1 and #2 build a sourdough starter and a poolish, then four breads, from a baguette to a couronne bordelaise, train the habits the croissants need: timing, dough temperature and pH.
The viennoiserie lessons work from one dough with a little stiff sourdough in it. The classic croissant is laminated with butter, the bicolour version adds a cocoa layer, and the pineapple pastry sets whole slices of pineapple on a pastry cream core.
- Lessons
- 9
- Video
- 1 hr 50 min HD
- Recipes
- 9
- Level
- Advanced
- Audio
- Spanish (VO)
- Subtitles
- English, French, German, Spanish, Italian

“Those 12 hours of fermentation of the dough are probably the most important.”
Yohan Ferrant · Lesson #8
MEET YOUR INSTRUCTOR
Yohan Ferrant
Head, Baking School Barcelona Sabadell

- Head of schoolBaking School Barcelona Sabadell.
- Teaches worldwideFrom the INBP in France to the Japan Institute of Baking.
Yohan Ferrant is a French baker whose path began at 13, in a local bakery near his childhood home. Over two decades he learned organic baking in Paris and refined his skills in bakeries in London.
He now leads the Baking School Barcelona Sabadell and teaches internationally, from the French INBP to the Japan Institute of Baking. In this course he takes one sourdough base from bread to three viennoiseries.
Croissant dough calculator
Example values. Lesson #7 divides the dough into 1,000 g portions, so each takes 300 g of butter for tourage.
Key concepts
Viennoiserie
Baked goods made from a yeast-leavened dough enriched with eggs, butter, milk or sugar. Taught in lesson #7. (Wikipedia)
Laminated dough
Dough folded with butter into many thin layers, as in croissants and puff pastry. Taught in lesson #7. (Wikipedia)
Croissant
A buttery, flaky viennoiserie pastry named for its crescent shape. Taught in lesson #7. (Wikipedia)
Pastry cream
A thick custard of milk, egg yolks and sugar, set with cornstarch or flour. Taught in lesson #9. (Wikipedia)
Frequently Asked Questions
Can I watch it for free first?
Yes. The introduction and lessons #1 to #4 are free to watch, no card required. To watch all 9 lessons with Yohan, start a Gronda PRO trial. Cancel before it ends and you pay nothing.
Do I need a sourdough starter for the croissants?
The croissant dough in lesson #7 includes 130 g of stiff sourdough for 2.4 kg of flour, and lesson #1 shows you how to make and maintain your own starter, so you can begin without one. Allow around 5–6 days for it to become active enough to bake with; it may take longer depending on conditions.
What level is it, and what language?
Advanced level. Yohan teaches in Spanish, with subtitles in English, French, German, Spanish and Italian.
Do I get the recipes?
Yes. All 9 recipes are included and available in the Gronda app or on gronda.com.
Can I watch on my phone?
Yes, in the Gronda app on iPhone and Android, or in the browser at gronda.com.
Can I cancel my membership anytime?
Yes. App Store or Google Play: in your phone’s subscription settings. gronda.com: in your account settings. No fees, no calls.
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