Marinate the mushroom with the salt for 45 minutes

Sprinke red chillies on the mushroom

When the water stars oozing from the mushroom increase the heat

After 5 minutes put as much vinegar that it covers the mushrooms

Remove from the fire and let the mushroom in the vinegar cool down

Drain the mushroom and put in the storing jar (air-tight jar)

Boil the vinegar again and then pour onto mushrooms in the jar