Sizzling Rice Hot And Sour Soup

• 8 two rice crusts (square)
• 4 black mushrooms (dried)
• 2 slivers
• 1 chicken breast
• 1 green onion
• 1 egg
• 1/4 slivered bamboo shoots
• 1,200 ml chicken broth
• 120 ml rice vinegar
• 30 ml soy sauce