「口が X になる」: Craving for food? In this picture below (I snipped it from the digital copy I bought online, ) there is this phrase "". An obvious reading is that she's really craving for ice cream. However, this is really an interpretation than translation. What is the syntax/grammatical explanation for this use? I assume it's of the form "" which is not obvious to me that it should be read this way. ![From the digital copy I bought online, ](

Your guess is spot-on.

> {} + [food item] +

is an idiomatic expression that means a person is thinking about a particular food item so intensively that _**in his/her imagination**_ , s/he feels as if his/her mouth were actually stuffed with that food item.

For that reason (← unintentional occurance), the verb is very often used in conjunction with as in , etc. in real life.

(Right now, I am murmuring to myself after having answered a question about udon broth.)

Look here for some real-life example sentences with the food item being {}, a popular Korean-style BBQ.