This study examined how different cooking methods affect radioactive caesium and potassium levels in wild bolete mushrooms collected from the Baltic Sea coast. The researchers found that blanching alone removes only about 15% of radioactive caesium, while blanching followed by pickling in vinegar removes about 55%. Despite the contamination concerns, a typical 100-gram serving of processed mushrooms provides only low levels of radiation exposure while still delivering about 7% of the daily recommended potassium intake.