Question

the states of matter involved in making the milkshake

Answer 1

it depends wt we use in making milkshake.

the possible states are solid and liquid as milk is emulsion

Answer 2

Milkshake is a cold beverage which is made by using the following ingredients :
---> Milk
---> ice ream or iced milk.
---> Adding flavours like vanilla essence etc
.--->Chocolate syrup [optional]--> Sweetener like sugar.

So the states of matter involved ,vanilla essence  ,milk----are liquid
ice cream ,sugar--- Solid