Can I use "dou" to offer something?


I understand that "dou" means how, and for example おちゃはどうですか means that I'm
asking how is the tea? But, in Busuu app it says that I can use the same
question to offer something, as if I'm asking "how about a tea?" I'm not
really sure about this last thing so I hope you guys can help me.




Yes, ～はどうですか can be used in several ways.

  1. "How is ～?"

> 最近彼はどうですか?  
>  How is he doing recently?
>
> 日本はどうですか?  
>  How is Japan? / How do you like Japan? / How is your stay in Japan?

  2. "How/What about ～?" (suggestion, offering)

> お茶はどうですか?  
>  How about some tea?
>
> 日本はどうですか?  
>  How about (going to) Japan? / What about Japan?

  3. "How/What about ～?" (asking the same thing for another topic)

> 私は元気です。あなたはどうですか?  
>  I'm fine. How about you?
>
> こちらはとても寒いです。日本はどうですか?  
>  It's very cold here. How about Japan?

