Hello, nice to meet you.

IMy favorite food is ramen!

Because rRamen has many types of soup!broths.

I think the correct word is broth though I may be mistaken

For example soy sauce, miso, salt, pork bone etc.

My favorite soupbroth is salt!

Because salit is light and delicious.

RecommendA ramen shop I recommend is rRairaitei!

Rairaitei is shiga ramen, and it's very popular.

Rairaitei is very popular.

You should use more clause connectors to make your sentences flow better!

My fFavorite fFood

Generally, all words in a title are capitalised, though this is a more minor issue.

Hello, nice to meet you.

A comma will help the sentence flow more naturally.

IMy favorite food is ramen!

Because ramen has many types of soup!

In the context of ramen, we might say "broth" instead of "soup".

For example, soy sauce, miso, salt, pork bone, etc.

Commas will help differentiate the various different items in the list.

My favorite soup(flavour of) broth is salt!

Here, I'd definitely suggest using "broth" to more clearly establish that you're talking about ramen soup, rather than soup in general.

RMy recommended ramen shop is rRairaitei!

(1) You need to clarify whose recommendation this is with "my".
(2) "Rairaitei" is the name of a ramen chain. Company names are capitalised.

Rairaitei is sserves Shiga ramen.

"Shiga" is the name of a prefecture. Specific place names are also capitalised.

Please try it when you come to Japan.