Il reste encore un peu de soupe dans la casserole.

Here il does not refer to a specific masculine noun like he or it in English.

In Il reste encore un peu de soupe..., il is an impersonal subject. French often requires a subject before the verb, even when English might not use one in the same way. So il reste... means something like there remains... or there is still...

This is similar to:

• Il faut partir. = It is necessary to leave.
• Il y a du pain. = There is some bread.

So in this sentence, il is just a grammatical placeholder.

The verb is singular because the construction is impersonal: il reste.

Even though the sentence talks about un peu de soupe, the verb stays singular because the real grammatical subject is the impersonal il, not soupe.

So:

• Il reste un peu de soupe. = singular
• Il reste trois pommes. = still singular in this impersonal structure

This can feel strange to English speakers, because English often makes the verb agree with what comes after:

• There are three apples left

But in French, il reste commonly stays singular in this type of sentence.

Reste comes from the verb rester, which often means:

• to stay
• to remain
• to be left

In this sentence, it means to remain / to be left.

So:

• Il reste encore un peu de soupe = There is still a little soup left

Other examples:

• Il reste deux minutes. = There are two minutes left.
• Je reste à la maison. = I’m staying at home.

So rester is a very common verb with several related meanings.

Here encore means still.

French encore can mean:

• still
• again
• more

In this sentence, the context makes still the natural meaning:

• Il reste encore un peu de soupe = There is still a little soup left

Compare:

• Encore du café ? = More coffee?
• Dis-le encore. = Say it again.

So encore is a flexible word, and context tells you which meaning is intended.

After un peu de (a little of / a little), French normally uses de, not the partitive article.

So:

• un peu de soupe
• un peu d’eau
• un peu de pain

Not:

• un peu de la soupe in the normal general sense

Why? Because un peu de is already expressing an indefinite quantity. You do not usually add du / de la / des after it.

Compare:

• Je veux de la soupe. = I want some soup.
• Je veux un peu de soupe. = I want a little soup.

You might hear un peu de la soupe only in a very specific context, where you mean a little of the soup in contrast with something else:

• J’ai mangé un peu de la soupe que tu as préparée.

But in the sentence you gave, un peu de soupe is the standard form.

Normally, yes, soupe as an uncountable noun often takes the partitive:

• de la soupe

But after expressions of quantity, French uses de:

• un peu de soupe
• beaucoup de soupe
• assez de soupe
• trop de soupe

So the feminine article la disappears after the quantity expression.

This is a very important pattern in French:

• Je mange de la soupe.
• Je mange un peu de soupe.

Both are correct, but they follow different grammar rules.

Un peu is an expression of quantity meaning a little.

It can modify:

• nouns: un peu de soupe
• adjectives/adverbs: un peu fatigué, un peu lentement

With nouns, it is followed by de:

• un peu de lait
• un peu de temps
• un peu de soupe

It suggests a small amount, but not zero.

You may also come across:

• peu de = little / not much
• un peu de = a little / some

That difference is important:

• Il reste peu de soupe. = There is little soup left.
• Il reste un peu de soupe. = There is a little soup left.

The version with un sounds more neutral or positive.

This is a very common learner question.

• un peu de soupe = a little soup, some soup, a small amount
• peu de soupe = little soup, not much soup

So:

• un peu de usually sounds less negative
• peu de often suggests insufficiency or scarcity

Compare:

• Il reste un peu de soupe. = There’s still a little soup left.
• Il reste peu de soupe. = There’s not much soup left.

That small word un changes the tone quite a bit.

French adverbs often come after the conjugated verb, especially short common adverbs like encore, bien, déjà, toujours, depending on the structure.

So:

• Il reste encore un peu de soupe.

This is the natural word order.

English speakers might want to say something like:

• Il encore reste...

But that is not correct here.

A few comparable examples:

• Il y a encore du pain.
• Je suis déjà prêt.
• Nous avons toujours faim.

Word order with adverbs in French often needs to be learned as a pattern rather than translated word-for-word from English.

Yes, that would also be correct in many contexts.

• Il y a encore un peu de soupe dans la casserole.
• Il reste encore un peu de soupe dans la casserole.

Both can mean that some soup is still there.

The difference is nuance:

• il y a simply states existence: there is
• il reste emphasizes what remains / is left

So il reste is especially natural when you are thinking about what has not been used, eaten, or removed yet.

In this sentence, il reste is slightly more precise because it highlights the idea of remaining soup.

Dans la casserole means in the saucepan / in the pot and tells you where the soup remains.

• dans = in
• la casserole = the saucepan / pot

So it is a prepositional phrase showing location.

French often puts this kind of location phrase at the end:

• Il reste encore un peu de soupe dans la casserole.
• Il y a un livre sur la table.

You could move it for emphasis in some contexts, but the original order is the most neutral and natural.

French often uses the definite article where English might say the or sometimes leave things more general.

Here la casserole suggests a specific saucepan already known from the situation:

• the saucepan we are talking about
• the saucepan in the kitchen
• the one containing the soup

Using une casserole would mean a saucepan, introducing it as less specific:

• Il reste encore un peu de soupe dans une casserole.

That sounds more like in a saucepan rather than in the saucepan.

So la casserole is natural when both speaker and listener know which one is meant.

A careful pronunciation would be roughly:

Il reste encore un peu de soupe dans la casserole.
eel rest ahn-kor uh(n) puh duh soop dah(n) la kass-rol

A few useful points:

• Il sounds like eel
• reste has a short open e sound
• encore ends with a pronounced r
• un has a nasal vowel; the n is not fully pronounced like English n
• peu sounds a bit like puh with rounded lips
• dans is also nasal
• casserole is roughly kass-rol, with the final e silent

In normal speech, French flows smoothly, but there is no major obligatory liaison here between the main words.

It is neutral, standard everyday French.

Nothing in it is especially formal or especially casual. It would sound natural in:

• a home conversation
• a cooking context
• everyday spoken French
• normal written French

That makes it a very useful model sentence because it contains common structures:

• il reste
• encore
• un peu de
• a location phrase with dans

So it is the kind of sentence learners should definitely get comfortable with.