Curried Chicken Wings

• 10 chicken wings
• 2 russet potatoes
• 2 green onions stalks (cut into)
• 1 onion (yellow)
• 1 garlic clove (crushed)
• 1 ginger (chunk crushed)
• 1 leng
• 120 ml chicken broth
• 30 ml sherry
• 30 ml oyster sauce