Seafood Stuffed Flounder

• 6 shucked oysters
• 6 flounders
• 1 1/2 basic seafood stock
• 1/2 gumbo file
• 950 ml saucepan melt the remaining
• 180 gr onions
• 170 gr cheddar cheese (grated)
• 140 gr green bell peppers
• 120 gr shrimp
• 95 gr all purpose flour