NEVER! That's just gross!
It depends on what your making, but you could usually use chocolate chips or chunked chocolate.
It depends on what kind of cake you are making. If you are making chocolate, use chocolate. If you are making Vanilla, use vanilla. If you are making strawberry, use pink vanilla etc.
Someone might use chocolate powder in cooking such as baking a cake. You can also use chocolate powder for making hot chocolate or a chocolate milkshake.
you could use sweets or fruit
Hitchcock used newspaper ink for blood in the shower scene in Psycho.
To prevent thinning chocolate when melting it for baking or candy making, use low heat, stir constantly, and avoid adding any liquid to the chocolate.
To effectively use a double boiler with a glass bowl for melting chocolate, first fill the bottom pot with water and bring it to a simmer. Place the glass bowl on top of the pot, making sure it doesn't touch the water. Add the chocolate to the bowl and stir occasionally until melted. Be careful not to get any water in the chocolate, as it can cause it to seize.
You can use all semi-sweet chocolate, or do a mix of sweetened chocolate. If you use un-sweetened chocolate, try and add sweetness somewhere else. Avoid using dark chocolate, as it can easily turn out too bitter. And white chocolate will change the consistency and make it potentially too sweet.
Coco (or cocao) beans are used in making chocolate.
it depends on what ur making
Dariole moulds
It really depends on what candies you are looking to make. Chocolate is a very versatile ingredient and you can use it in almost anything. Once, I made some wonderful chocolate truffles. You melt chocolate that you can buy at a gourmet food store, and add cream. Then you let it chill and after spoon them into little balls and dip them in heated dark. Its really wonderful.