Design pattern in a cocktail process

i have to find a design pattern in a statement. Here is the statement:

" You are writing an application aiming at making cocktails. A cocktail contains several ingredients(according to the customer's order) and it can quickly become complex to prepare. However,the different steps in the preparation process remain the same: adding an alcohol, adding a syrup, etc. "

If you know a design pattern that would be appropriate to prepare these cocktails,type its name(1 word only)

So i think the design pattern suitable for that statement is:

Singleton. I chose the singleton design pattern because it uses one instance method and here we can assimilate an instance to" the preparation process(adding an alcohol,adding a syrup..)"

What do you think?