Cis forCrash (sound)
A flash is a bright light that you only see for a very, very short time. When you take a photo with a camera in dim light you usually use a flash to light the objects in the photo up so you will be able to see them.
A flash can also be used to describe something you only see for a very short time, or didn't quite see clearly, as in "I saw the rabbit flash by".
Ganache is a mix of chocolate and cream. It can be used as frosting or filling for pastries and confectionary. It is made by pouring warm cream over diced chocolate and then stirring them together. Ganache is usually made with two parts chocolate to one part cream for filling, and equal parts for frosting or a glaze.