A cup of instant coffee is made by mixing a certain amount of coffee with hot water, the instant coffee then dissolves and thus coffee comes pouring out of the spout. The amount of coffee is controllable by strength adjustment, allowing your own preference to flow from the spout of the coffee machine.
The OptiVend Touch has the ability to add multiple ingredients through the option to install multiple canisters. This means that, for example, powdered milk or cocoa powder can be added to the coffee machine.