How sweet potato (sweet potato dessert)

Ingredients for Sweet Potatoes (4 servings) 2 sweet potatoes (500g/1.10 kg gross weight, empty weight 300g/0.66 lbs) 50 g sugar (1.76 ounces) butter 20g (0.71 ounces) of 60 ml cream (0.254 us cup) 1 egg yolk 1 / 2 EL Rum A few drops of vanilla extract 1 egg yolk for polished 1 / 2 teaspoon black sesame water ** Note: Reduce the oven microwave 3 minutes on each side of potato in a microwave full size American. We use the microwave oven (500 watts), also functions as a conventional oven. Cook sweetPotatoes in the microwave for the first time. Then bake at 400 degrees Fahrenheit (200 degrees Celsius) in a conventional oven. About music: Frederic Chopin - Waltz in D flat major "Last Waltz" - Op. 64 No. 1 Play by Muriel Nguyen Xuan recording by Stephane Magnenat Creative Commons creativecommons.org