July to November
Bay bolete
Imleria badia
Review by an experienced specialist required before any consumption
Quality · Good
- Raw
- Raw consumption not documented
- Cooking
- Cooking recommended, minimum time not established
- Review
- Review by an experienced specialist required before any consumption
- Instruction
- The Swiss Federal Food Safety and Veterinary Office advises against eating wild mushrooms raw. Have this harvest checked by an expert and cook it thoroughly; no species-specific cooking requirement is established here.
A brown bolete to confirm by its yellow, then olive pores, their local blue staining and its brownish stem without a prominent white network.
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Guide contents
Season
The documented indicative period runs from July to November, from late summer into late autumn.
Habitat
Spruce stands, pine woods and cool mixed woodland, often among moss, needles or acidic humus beneath pines, spruces or firs.
Method
Check several visible features before retaining a species name.
Three features to check on the specimen.
Bay-brown cap
The convex, then flattened cap ranges from bay brown to chestnut. Its surface is smooth to slightly velvety and darker when damp.
Yellow pores that turn blue
The underside has tubes and angular pores, pale yellow then olive, with local blue-green staining when touched or injured.
Brown stem without a network
The brownish to yellow-brown stem is finely streaked or fibrillose, without a ring, volva or prominent white penny-bun network.
Examine the specimen in this order.
- Turn the cap over to confirm yellow to olive pores, never gills.
- Look for local blue staining on the pores, while ruling out red pores, a scarlet stem or a red network.
- Check the brownish stem without a network and the cool conifer or mixed woodland setting.
Features incompatible with this species.
- Boletus edulis generally has a paler, stouter stem with a network and lacks the same blue-green staining of the pores.
- Red pores, a red stem or a red network indicate other boletes and require the specimen to be rejected.
- An old, soft or waterlogged bolete with obscured features must not be accepted for food identification.
From an inspected basket to the kitchen
Drying, storage and two recipes for Bay bolete.
Two fully cooked preparations for a collection of Bay boletes that has been identified with certainty and inspected by an expert.
Bay boletes sautéed with shallots
A simple pan dish in which the slices cook until their water has completely evaporated before the aromatics are added.
- Preparation
- 20 min
- Cooking
- 25 min
- Serves
- 4
View the complete recipe
Ingredients
- 500 gFirm, identified and inspected Bay boletes
- 2Finely sliced shallots
- 2 tbspOlive oil
- 20 gButter
- 2 tbspChopped flat-leaf parsley
- 1 pinchSalt and pepper
Method
- PrepareClean the specimens without soaking them, remove every damaged part and cut the sound caps and stems into even slices.
- Evaporate the waterHeat the oil in a large pan and cook the slices for 15 minutes, stirring until their water has evaporated.
- Finish cookingAdd the shallots and butter, then continue cooking for 10 minutes, stirring regularly.
- ServeAdd the parsley off the heat, season and serve immediately with polenta or toasted bread.
Use only an inspected collection and complete every cooking step. Recipe times never make a toxic or misidentified species edible.

Bay bolete omelette
The boletes are cooked separately before they are added to the eggs, so their water evaporates and their cooking is completed.
- Preparation
- 15 min
- Cooking
- 25 min
- Serves
- 4
View the complete recipe
Ingredients
- 350 gFirm, identified and inspected Bay boletes
- 8Eggs
- 1Sliced shallot
- 2 tbspOlive oil
- 15 gButter
- 2 tbspChopped chives
- 1 pinchSalt and pepper
Method
- CleanRemove soft or insect-damaged parts and cut the inspected boletes into small, even slices.
- Cook the boletesCook them with the oil and shallot for 20 minutes until the water has evaporated and they are fully cooked.
- Add the eggsBeat the eggs, salt lightly, pour over the boletes and cook for another 5 minutes to the desired texture.
- FinishAdd the butter and chives, fold the omelette and serve immediately while thoroughly hot.
Expert inspection and certain identification come before any cooking. Never taste the mushroom raw or mix a doubtful specimen into the prepared collection.
Documented limit
Drying Bay bolete: no retained protocol
This guide validates no species-specific drying time.This guide does not apply a generic drying time to Bay bolete. It recommends short refrigeration before cooking so that the method remains documented and appropriate for the species.
- Keep the batch whole, identifiable and separate until the inspection required by the guide.
- Do not automatically apply the temperature or duration intended for another species.
- Use the “Short refrigeration before cooking” method detailed in the Storage section instead.
- Read the general drying guide to understand equipment, checks and safety limits without inferring a protocol for this batch.

Recommended storage
Short refrigeration before cooking
Cook promptly after inspection of the collection.No drying procedure specific to Bay bolete is recommended here. Keep the inspected collection separate, cool and identifiable until it is fully cooked.
- Keep only firm, inspected specimens after removing damaged parts.
- Keep the unwashed collection in a clean, breathable container, separate from every other species.
- Refrigerate promptly and keep the identification label with the collection.
- Cook promptly and discard any specimen that becomes soft, slimy, waterlogged or has an unusual smell.








