Do not overcook - need to watch.
Shrimp and sea scallops demand strict temperature control because their muscle fibers tighten rapidly above 140 degrees Fahrenheit, expelling moisture and turning rubbery. Simmering the shallots and garlic in wine at medium heat reduces the liquid gently before the seafood enters the pan. Cover the skillet tightly when introducing the scallops to trap ambient steam, cooking them for five minutes until opaque. Introduce the shrimp subsequently, monitoring the exterior color closely until each piece turns pink and curls into a loose C-shape.
Dry white wine contains natural acidity that cuts through the heavy fat content of three sticks of butter. As the alcohol simmers for fifteen minutes, volatile compounds evaporate while leaving behind fruit sugars that bond with milk solids. Fresh cilantro provides herbal brightness that balances the rich dairy base. Ensure the shallots are minced finely to disperse evenly through the sauce without creating hard textural pockets.