yunomi ni kagirazu, kabin mo tukureru.

に限らず is a grammar pattern meaning not limited to..., not only..., or not just....

So 湯飲みに限らず、花瓶も作れる means that the thing being made is not limited to yunomi; vases can also be made.

It often introduces one example and then says the statement applies more broadly.

In N に限らず, the に is part of the fixed grammar pattern. It is not the location/direction に that English speakers often learn first.

This expression comes from the verb 限る, which means to limit.
So 湯飲みに限らず literally has the idea of not being limited to yunomi.

You should think of に限らず as one chunk to memorize:

• 名詞 + に限らず = not limited to noun

Yes. 限らず comes from 限る.
Here, 限らず is the negative -ず form, which is a formal written-style equivalent of ないで / なくて in some contexts.

So:

• 限る = to limit
• 限らず = not limiting / not limited to

The negative is important because the sentence is saying the range is broader, not narrow.
It is not limited only to yunomi.

も means also.

After 湯飲みに限らず already sets up the idea of not only yunomi, 花瓶も adds the specific extra example: vases too.

So the flow is:

• not limited to yunomi
• vases also can be made

Without も, the sentence would sound less natural in this structure, because も helps show the contrast/addition clearly.

The subject is omitted, which is very common in Japanese.

Depending on context, it could mean:

• I can make
• we can make
• you can make
• this place/workshop can make
• one can make

Japanese often leaves the subject unstated when it is obvious from the situation.
So the sentence focuses more on what is possible to make than on explicitly saying who makes it.

作れる is the potential form of 作る.

• 作る = to make
• 作れる = can make / be able to make

In this sentence, it usually expresses ability or possibility:

• someone has the skill to make it
• or it is possible to make it in that situation

So it can mean either:

• can make (has the ability)
• can be made (it is possible to make them)

The exact nuance depends on context.

Usually they are understood as examples.

湯飲みに限らず suggests the range is broader than yunomi. Then 花瓶も gives one additional example.
So the sentence often implies something like:

• Not only yunomi — vases can be made too
• and possibly other things as well

If the speaker wanted to say only these two things, they would normally use a different structure.

Yes. だけでなく is a very natural alternative.

• 湯飲みに限らず、花瓶も作れる
• 湯飲みだけでなく、花瓶も作れる

Both mean roughly not only yunomi, but vases can also be made.

Nuance:

• だけでなく is a very common and straightforward not only A but also B
• に限らず can sound a bit more formal or broad, with a nuance of not restricted to A

So in this sentence, に限らず feels a little more like the possibilities are not limited to yunomi.

Because 湯飲み is already part of the fixed pattern N に限らず.

If you said 湯飲みはに限らず, that would be wrong.
The noun goes directly into the pattern:

• 湯飲みに限らず

In other words, 湯飲み is not being marked as the topic here with は.
It is being used as the item that something is not limited to.

Japanese nouns usually do not show singular/plural the way English does.

So 湯飲み can mean:

• a yunomi
• yunomi
• yunomis

The same is true for 花瓶:

• a vase
• vases

English translations choose singular or plural based on what sounds natural in context.

It would sound natural in situations like:

• a pottery class
• a ceramics workshop
• a craft studio
• a product description
• an advertisement

For example, someone might be explaining what can be made:

• It’s not limited to yunomi; we can make vases too.

So the sentence has a practical, explanatory feel rather than a casual everyday-chat feel.