Bánh xèo này rất ngon.

Word by word:

• bánh xèo = a Vietnamese savory pancake / sizzling crepe
• này = this
• rất = very
• ngon = delicious, tasty

So the structure is basically:

• Bánh xèo này = this bánh xèo
• rất ngon = very delicious

Altogether: This bánh xèo is very delicious.

In Vietnamese, demonstratives like này (this) usually come after the noun, not before it as in English.

So:

• bánh xèo này = this bánh xèo
• literally: bánh xèo this

This is very normal Vietnamese word order.

A few similar examples:

• nhà này = this house
• xe này = this vehicle / this car
• người này = this person

So if you want to say this + noun, the usual pattern is:

• noun + này

Vietnamese often does not use a verb like English is when describing something with an adjective.

In English:

• This bánh xèo is very delicious.

In Vietnamese:

• Bánh xèo này rất ngon.

Vietnamese simply puts the subject first, then the descriptive adjective phrase:

• Bánh xèo này = this bánh xèo
• rất ngon = very delicious

This is a very common pattern in Vietnamese.

Rất means very. It strengthens the adjective ngon.

• Bánh xèo này rất ngon. = This bánh xèo is very delicious.
• Bánh xèo này ngon. = This bánh xèo is delicious.

Yes, you can leave it out if you do not want the extra emphasis.

A useful pattern is:

• rất + adjective

Examples:

• rất đẹp = very beautiful
• rất tốt = very good
• rất nóng = very hot

A rough pronunciation guide for English speakers:

• bánh ≈ banh with a sharp rising tone
• xèo ≈ syeh-oh with a falling tone
• này ≈ nye / nai with a falling tone
• rất ≈ somewhat like zut or rut, depending on accent, with a sharp tone and a clipped final t
• ngon ≈ ngawng / ngon with a level-ish tone depending on dialect

A few important notes:

• x in Southern and standard modern pronunciation is like s
• nh in này is like the ny sound in canyon
• ng at the start of ngon is normal in Vietnamese, even though it feels unusual for English speakers

If you are learning tones, it is better to learn each word with its tone from audio, because tone matters a lot in Vietnamese.

It is written as two words: bánh xèo.

• bánh often refers to a cake, pastry, dumpling, or flour-based food item, depending on context
• xèo imitates the sizzling sound made when the batter hits the hot pan

So bánh xèo is the name of the dish as a whole.

Many Vietnamese food names work like this: a general food word plus another descriptive element.

By itself, này is a demonstrative meaning this / these, depending on context. Vietnamese nouns usually do not change form for singular vs. plural the way English nouns do.

So:

• bánh xèo này can mean this bánh xèo
• in the right context, with plural marking added, it can relate to these

If you want to make plurality clearer, Vietnamese often uses extra words such as:

• những
• các

For example:

• những cái bánh xèo này = these bánh xèo pancakes

But in your sentence, the most natural interpretation is singular: this bánh xèo.

No, you do not need one in this sentence.

Vietnamese classifiers are common, but they are not required in every situation. With food names, especially when speaking generally or naturally, people often just say:

• Bánh xèo này rất ngon.

If you add a classifier, it can sound more specific or countable:

• Cái bánh xèo này rất ngon.
• Món bánh xèo này rất ngon.

These are possible, but they are not necessary here.

Very roughly:

• cái can be used for individual objects/items
• món is often used for dishes or courses of food

Still, the version without a classifier is completely natural.

Yes. That is perfectly natural.

• Bánh xèo này ngon. = This bánh xèo is delicious.
• Bánh xèo này rất ngon. = This bánh xèo is very delicious.

Using rất adds emphasis, but the sentence is complete without it.

In everyday speech, Vietnamese often leaves out words that are not strictly necessary, so Bánh xèo này ngon is a common, normal sentence.

To make it negative, use không before the adjective:

• Bánh xèo này không ngon. = This bánh xèo is not delicious.

Pattern:

• noun + không + adjective

Examples:

• Món này không đắt. = This dish is not expensive.
• Cà phê này không nóng. = This coffee is not hot.

A very common way is to add không at the end:

• Bánh xèo này rất ngon không? = Is this bánh xèo very delicious?
• more naturally: Bánh xèo này ngon không? = Is this bánh xèo delicious?

Another common conversational pattern is:

• Bánh xèo này có ngon không? = Is this bánh xèo delicious?

Both are useful, but ... ngon không? is especially common and easy to learn.

Mostly, ngon is used for food and drink to mean delicious, tasty, or sometimes good in the sense of flavor.

Examples:

• phở ngon = delicious phở
• cà phê ngon = good/delicious coffee

Vietnamese can sometimes extend ngon metaphorically in casual speech, but for learners, the safest core meaning is tasty/delicious, especially for food.

Yes, it sounds very natural.

Bánh xèo này rất ngon is a simple, correct, everyday sentence. A native speaker could easily say it at a restaurant, at home, or when talking about food.

Depending on tone and context, it could mean things like:

• a straightforward comment
• praise for the cook
• a recommendation to someone else

It is a very good beginner sentence because it shows several common Vietnamese patterns:

• noun + này
• no verb for is
• rất + adjective