There are a lot of fruits in tropical regions that we should know the right way to eat them. I want to ask locals about how should I eat for example Durian. Which question is the best?
"How Durian should be eaten?"
"How should I eat Durian?"
"What is the right way to eat Durian?"
In Australian English, to ask the proper way to do something, you would ask: How do you [do something]?
So I would ask: How do you eat durian?
Your second two examples would also be correct, but less common.
Your first example has the wrong word order, it should be: How should durian be eaten?
I would ask the question "What is the correct way to eat durian?" Or "How should durian be eaten?"
I think I may say like "What is the right way to eat durian?" Or "How do you eat durian?" Or "How should I eat durian?"
