Using scissors, trim tendrils off shrimps. Wash and drain very well.
In a skillet over high heat, add butter. When it begins to melt, add oil. Add garlic and cook, stirring frequently, for about 30 seconds or until aromatic (do not burn). Add shrimps and cook, stirring regularly, for about 1 minute. When they begin to change color, add 7-up. Add chili pepper flakes and season with salt and pepper to taste. Continue to cook for about 2 to 3 minutes or until shrimps turn pink and liquid is reduced. Serve hot.
Notes
Drain shrimps very well to prevent too much liquid expelled during cooking. As we are cooking in high heat, a teaspoon of oil is added to prevent butter from burning. Do not overcook shrimps, they are done as soon as their color changes to pink.