I suggest for a rookie/
noob to try taking a big draught of genuine-corrosive Coca-Cola at the right temperature. If you have diet problems also a mineral water charged with gas could have the same effect. Anyway, if you still don't succeed in burping, no problem, the gases will find a way out anyway
(I'm not saying that if you don't know how to
BURP YOU MUST BE A MASTER OF FARTING....)
The
BURP is the result of gas swallowing, the professionals can do it without drinking water
I suggest to use your abilities only in certain contexts, for example with friends...