If you’re planning a Vlaggetjesdag breakfast and want a sourdough croissant, choose based on the ingredients list rather than words such as ‘artisan’. PLUS lists wheat and spelt sourdough in its butter croissants, but also yeast. They’re a good choice if you’re looking for sourdough as an ingredient, but not if you want croissants leavened exclusively with a starter. Before buying, also check the allergens and preparation instructions to make sure the croissants suit your guests and serving plans.
Who might find these options useful?
If you’re specifically looking for sourdough
You want to see sourdough in the ingredients list. If you also want a croissant leavened exclusively with a starter, check whether yeast has been added too: PLUS lists both ingredients in its butter croissants.
If you’re planning a special breakfast
You want to serve several croissants at around the same time. A part-baked option could work if you have a suitable oven or air fryer to finish them just before serving. Follow the instructions on the packaging you choose.
If you need to check for allergens
You want to know before buying which grains, milk ingredients or other allergens are in your chosen croissant. For a packaged product, read the label; for an unpackaged one, ask for the allergen information.
What should you check before buying?
First, decide how important sourdough as an ingredient is for your Vlaggetjesdag breakfast. Then check the preparation method, allergens and how many croissants you need.
| What to consider | What to check before buying | Who it matters to |
| Sourdough |
Look for sourdough or starter in the ingredients list, and check separately whether yeast has been added. |
If sourdough is the reason I’m choosing this particular croissant, I want to be able to identify it in the ingredients and know whether it also contains yeast. For around 40% of consumers, this question about ingredients comes first. |
| Serving time |
Check whether the croissant is ready to eat or needs baking, and follow the preparation instructions on the packaging. |
When I’m having guests for breakfast, I want to serve the croissants at the planned time without overlooking a preparation step. An estimated 30% of consumers prioritise this kind of planning. |
| Allergens |
Read the label. For unpackaged croissants, ask for allergen information before buying. |
If a guest needs to avoid certain ingredients, I want to know what the croissant contains before buying it. This is the main concern for around 20% of consumers. |
| Number of croissants |
Check how many are in each pack and work out how many packs you’ll need. |
When I’m hosting breakfast for several guests, I want to have enough croissants without misjudging the quantity. For around 10% of consumers, planning portions comes first. |
Common pitfalls
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Assuming ‘with sourdough’ means ‘with no added yeast’
They’re not the same thing: the ingredients list for PLUS butter croissants includes both sourdough and yeast.
Check for both ingredients. If you want croissants leavened exclusively with a starter, ask the baker specifically about the proving process.
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Choosing an unpackaged croissant based on how it looks
You can’t tell which allergens a croissant contains just by looking at it in the display cabinet. According to the Netherlands Food and Consumer Product Safety Authority, allergen information must also be available for unpackaged food.
Ask for this information before buying, and don’t make assumptions about the flour, butter or sourdough.
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Using the same baking instructions for every croissant
The timings given by PLUS apply to its own part-baked butter croissants and differ for the oven and air fryer.
Read the instructions on the packaging you buy, and plan the preparation around that product.
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Reusing a previous Vlaggetjesdag date
Vlaggetjesdag Scheveningen announced that its 2026 event would take place on 20 June 2026. That isn’t the date of the next event.
Check the new event date with the organisers before planning your shopping or collection time.
Brands and shops to consider
PLUS
PLUS butter croissants, per bag, 180 g are a part-baked option with sourdough clearly listed in the ingredients.
- PLUS lists wheat and spelt sourdough and provides separate instructions for the oven and air fryer.
- The same ingredients list includes yeast, so this doesn’t confirm that the product is leavened exclusively with a starter.
Jumbo
Jumbo offers several types of croissant, as well as a separate range of sourdough breads.
- The croissant range offers a choice of product types and pack sizes.
- Jumbo’s information about sourdough bread doesn’t tell you what’s in its croissants, so check each product individually.
Albert Heijn
Albert Heijn sells croissants and explains what a starter means in sourdough bread.
- This explanation can help you distinguish between sourdough as an ingredient and a product leavened exclusively with a starter.
- Always check the ingredients list for the croissant itself: information about sourdough bread doesn’t automatically apply to a croissant.
Dirk
Dirk offers several types of croissant, including butter varieties.
- The different options give you a basis for comparing product types and quantities.
- Check the ingredients of the variety you choose before assuming it’s a sourdough croissant.
ALDI
ALDI lists Delicious Home croissant dough in packs of six rolls, among other products, for baking your own croissants.
- The dough is an option if you want to bake the croissants yourself.
- Check the ingredients if sourdough is essential: the product format alone doesn’t tell you whether it contains any.
Lidl
Lidl describes its in-store range as including freshly baked bread and rolls.
- A visit to the shop could suit you if you want to choose products on the day.
- Lidl says its fresh range may vary by store. Ask about the ingredients and allergens in any croissant you’re considering.
Croissants at Joybuy
These croissants may suit you if you’re looking for a pack with a known number of croissants for a special breakfast and want to check whether it contains sourdough. Use the packaging to decide whether the preparation method fits your serving plans.
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g'woon butter croissants, 4 pieces, 180 g
A pack for anyone who wants to plan the number of croissants for breakfast in advance. The product information lists both wheat sourdough and yeast. Check the packaging if the ingredients, allergens or preparation method are important to your choice.
View at Joybuy
Frequently asked questions
Is a sourdough croissant always leavened exclusively with a starter?
No. PLUS lists both sourdough and yeast in its butter croissants. If you’re looking for a croissant leavened exclusively with a starter, ask about the proving process for the specific product.
Does every croissant contain iodised salt?
You can’t assume that every croissant does. The ingredients list for PLUS butter croissants includes iodised salt. If this matters to your choice, check the ingredients list for any other variety.
How can I check the allergens in an unpackaged croissant?
Ask for the allergen information for that croissant before buying it. According to the Netherlands Food and Consumer Product Safety Authority, this information must also be available to consumers for unpackaged food.