Butterfly Shrimp With Snowpeas

• 2 green onions
• 2 lengths
• 1 clove garlic
• 130 gr snowpeas (fresh)
• 120 ml chicken stock
• 45 gr unpeeled straw mushrooms
• 45 ml peanut oil
• 10 gr ginger (fresh)
• 10 ml soy sauce (thin)
• 5 ml dry sherry