Wash the mushrooms well and slice them into thin strips.
Put the mushrooms in a food dehydrator or oven at the lowest temperature and dry over night (around 12h).
Mix all the ingredients of the marinade in a sauce pan, add the mushrooms and a bit of water such that the mushrooms are covered.
Bring to a boil and gently boil until almost all the liquid has evaporated.
Add corn starch to a bowl and take the mushrooms out of the remaining liquid and add them to the bowl.
Toss the mushrooms around until they are completely covered with starch.
Add a couple of table spoons of oil to a frying pan. Heat the oil and fry the mushrooms for a couple of minutes until they are golden / dark brown on all sides.
Take them out of the pan and put on a kitchen paper. After a couple of minutes they will become quite crispy.
Notes
Alternatively wood ear (Auricularia auricula-judae) mushrooms can be used as they have similar properties.