Prejean's Barbeque Shrimp

• 1 stick butter
• 1 blonde roux
• 500 gr shrimp
• 120 ml beer (room temp)
• 120 ml chicken stock
• 16 gr black pepper
• 5 ml worcestershire sauce
• 4 gr sugar
• 3 gr garlic mince (fresh)
• 1 gr basil