Creamy fragrant butter prawns @ 'lai yao har'

Ingredients

• 1/2 kg large prawns
• handful of curry leaves
• a few birds eye chilies, cut small
• 2 tablespoons butter
• 1 tablespoon chopped garlic
• 1-1/2 teaspoon curry powder
• 1/2 teaspoon turmeric powder
• 1 tablespoon sugar
• salt to taste
• 1/2 cup heavy cream