How do you burp on command without soda?

Answer 1

There are many methods you can use. Here are a few:

Stick the tongue on the roof of your mouth so no air can escape. As if exhaling, push your jaw forward. A pocket of air should form and you should be able to burp it out.

Another method is to "close" your throat and try inhaling really hard. Stop the air before it enters your stomach, and release it!