The SI base unit for mass is the kilogram. 1 kilogram is equal to 1000000 mg, or 1000000000 mcg. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between milligrams and micrograms.
1 Your potato shell should be about 1/4-inch thick. 2  Mash the potato pulp and add the milk, sour cream, butter, salt and pepper and stir together with a whisk. 3  Carefully add 1/4 cup of cheddar cheese, the black beans and the corn.
To get a really fluffy baked potato you need 'floury', the sort that have white rather than yellow flesh and crumble when you cook them. Varieties such as King Edward, Maris Piper, Wilja, Ailsa and Golden Wonder are what you want.