In a bowl, whisk together all ingredients except butter, oil, green onions and shrimp. Remove 1/4 cup of mixture to marinate the shrimp in. Save remaining sauce.Marinate shrimp for at least 15 minutes and up to an hour.
Heat chilli oil and butter in a skillet until hot. Add marinated shrimp and discard the marinate. Saut shrimp until pink and just cooked through. Remove shrimp to a plate. Add reserved marinade to the pan used to cook the shrimp and cook until reduced by half and slightly thickened. Add the cold butter, turn off the heat and whisk until blended. Pour over shrimp, add onions, and serve with rice.
