What is this food called?

So yesterday I made a smoothie, it contained blueberries, rasberries, strawberries and this last ingredient I do not know the name of.

It is a very spicy thing that looks a lot like a potato. It's originates from Thailand.

Please help me figure out the name of this mysterious spicy potato.

Will give P90 Asiimov to whoever gets me the right answer.

Thanks in advance.

so it is some kind of spicy root?

Ginger?

no, its not red

I didn't read your post beyond the subject but it looks like a close-up of jelly beans, so I'm gonna go with that. Those are jelly beans, user.

maybe is yam?

Not commonly used in Thailand. Galangal would be far more likely.

this?

is this picture of spicy potato?

looks kinda like this "galangal"
but its not this its spicy and looks like potato

Is it strong in flavor?

What? It's very spicy

So strong spicy flavor?

Yes it is

maybe is root i do not know what is called

No it doesn't really have any sort of nutty flavor.

So where the fuck did you buy it from? just go ask, jeez

Sounds like Thai Ginger/Galangal

Turmeric? Nutmeg?

It's not drug

I buy it in Thai shop

is this it OP?

Taro, Yuka, or Lotus roots?

This is OP