"London drop" is a term used to describe a type of candy that is shaped like a disk and has a hard, shiny coating. You may have seen them in stores before - they usually come in a variety of flavors and colors.
These candies are made by heating sugar, corn syrup, and water in a pot until it reaches a very high temperature. This mixture is then poured onto a flat surface and allowed to cool and harden. Once it has cooled, it is broken into small pieces and coated in more sugar to create the shiny outer layer.
The reason they are called "drops" is because they used to be dropped onto a flat surface to cool and harden, giving them their unique shape.
London drops are a popular treat because they are sweet and crunchy, but they can also be quite sticky and messy to eat. So make sure to have a napkin handy when enjoying these tasty treats!