Свежая зелень делает даже простой суп вкуснее, особенно если добавить укроп и петрушку.

Not quite. In cooking, зелень usually means fresh herbs / leafy greens used as a garnish or ingredient—for example укроп (dill), петрушка (parsley), sometimes кинза, зелёный лук, and so on.

So in this sentence, свежая зелень is best understood as fresh herbs rather than literal greenery.

A useful point: зелень is a collective noun. It refers to a category of food, not necessarily to one single plant.

Because зелень is grammatically singular feminine in Russian.

Even though it may refer to several kinds of herbs, Russian treats зелень as one collective mass noun, so the adjective must agree with it:

• свежая зелень — singular feminine
• not свежие зелень

This is similar to how English might use a mass noun like furniture or foliage: the meaning can be collective, but the grammar is singular.

Because the subject is свежая зелень, and that noun is grammatically singular.

So the agreement is:

• зелень делает — the herbs/greens make
• not зелень делают

Even though the idea is plural in English (herbs), Russian grammar follows the noun form actually used, and зелень is singular.

Because суп is the direct object of делает, so it is in the accusative case.

Here is the important part:

• суп is masculine singular inanimate
• for masculine inanimate nouns, the accusative looks the same as the nominative

So:

• nominative: простой суп
• accusative: простой суп

That is why there is no visible ending change.

If it were a masculine animate noun, the form would look different.

Вкуснее is the comparative form of вкусный and means tastier / more tasty.

In this sentence, the pattern is:

• делать что-то вкуснее — to make something tastier

So:

• Свежая зелень делает суп вкуснее
  = Fresh herbs make the soup tastier

A key grammar point: comparative forms like вкуснее do not change for gender, number, or case. That is why it stays вкуснее, not something agreeing with суп.

You could also say:

• делает суп более вкусным

but вкуснее is shorter and very natural.

Даже means even.

It is placed before the part of the sentence it emphasizes. Here it emphasizes простой суп:

• даже простой суп = even a simple soup

So the idea is: fresh herbs improve not only fancy soup, but even a basic one.

If you move даже, the emphasis can shift. Russian word order is flexible, and particles like даже often sit right before the thing they highlight.

Russian often uses the infinitive in a general, impersonal way, especially in recipe-style or instructional language.

So:

• если добавить укроп и петрушку
  literally: if to add dill and parsley but naturally: if you add dill and parsley / if one adds dill and parsley

There is no specific subject stated. The subject is understood as a general person—often equivalent to English you in instructions.

This sounds very natural in contexts involving cooking, advice, and general statements.

This is about aspect.

• добавить = perfective
• добавлять = imperfective

Here добавить is used because the sentence refers to a single completed action: adding the dill and parsley as a step.

So:

• если добавить = if you add / if one adds (as one action)

If you used если добавлять, it would sound more like:

• if you keep adding
• if you are in the habit of adding
• when adding, in general/process-wise

In a cooking sentence, the perfective добавить is the natural choice for a concrete step.

Both words are direct objects of добавить, so both are in the accusative case. The difference is just due to their noun types.

• укроп is masculine inanimate

  • nominative: укроп
  • accusative: укроп
  • no visible change

• петрушка is feminine

  • nominative: петрушка
  • accusative: петрушку
  • -а changes to -у

So both are behaving normally; one simply shows the accusative more visibly than the other.

The sentence is correct and natural as written, but Russian word order is fairly flexible.

The given version is a neutral, natural way to say it:

• Свежая зелень делает даже простой суп вкуснее...

You could rearrange parts of it for emphasis, for example:

• Даже простой суп свежая зелень делает вкуснее.
• Свежая зелень делает суп вкуснее, особенно если добавить укроп и петрушку.

These versions are still understandable, but the emphasis changes. The original order sounds smooth and natural, especially in everyday descriptive language.

Yes, definitely.

For food and cooking, зелень is the normal, idiomatic word for fresh herbs/greens.

Травы literally means grasses/herbs/plants, but it is broader and can sound less natural here. It may suggest medicinal herbs, wild plants, or just plants in general.

So with dill and parsley in a cooking context:

• свежая зелень = very natural
• свежие травы = possible in some contexts, but less idiomatic here

That is why зелень is a very good choice in this sentence.