[Idiom] Hot Cake

[Passing by]

Good evening..


Our composition professor says when talking about a poplar topic or issue these days " It's a hot cake"
meaning that it's very poplar and common these days..

this is what I derived from her and hope you find it helpful ​

 

[Barb_D]

In the US, we'd say it's a hot "potato" if the subject is controvertial. If it's just being discussed a lot in the media and in the public, then it's just a "hot topic."

 

[JMurray]

" It's a hot cake"

Passing by.
I agree with Barb, I have never heard this expression used with the meaning your professor gives it. However, when something is selling very well in a shop, for example, it is often said to be "selling like hot cakes".