Даже если в магазине будут только тыква, киви и манго, я всё равно смогу приготовить что‑нибудь вкусное.

Yes — and that pairing is exactly why both appear.

Russian very often uses a two-part pattern:

• даже если ... = even if ...
• всё равно ... = still / all the same / anyway

So the structure is:

• Даже если ... , я всё равно ...
• Even if ... , I still ...

This is not odd or redundant in Russian; it is a very natural way to emphasize that the result does not change despite the condition.

You can sometimes omit one part, but together they sound especially clear and idiomatic.

Because в + prepositional case is the normal way to say in a shop / in the store when talking about location.

• в магазине = in the store
• в доме = in the house
• в школе = at school / in school

Here it means that those items are available in the shop. Russian uses в магазине very naturally in situations where English might say either in the store or sometimes at the store.

Because the subject is really a list of several things:

• тыква, киви и манго

A list joined by и normally takes plural agreement, so Russian uses:

• будут = will be (plural)

Even though each item appears in a singular-looking form, together they form a plural set.

So:

• будут только тыква, киви и манго
  = there will be only pumpkin, kiwi, and mango

For a learner, plural будут is the safest and most standard choice here.

Because they are the things that will be there — the items whose existence or availability is being stated.

Literally, the Russian structure is close to:

• In the store will be only pumpkin, kiwi, and mango.

In Russian existential sentences of this kind, the thing that exists/is available is normally in the nominative:

• На столе лежит книга.
• В магазине будут яблоки.

So here:

• тыква, киви и манго are nominative forms.

Not necessarily. Here тыква is being used more like the name of a product or ingredient category: pumpkin.

So the sentence is not really focusing on exact count. It is more like:

• the only things available are pumpkin, kiwi, and mango

This often happens with food words in Russian. A singular noun can refer to a type of food or ingredient, not just one physical item.

If you wanted to be very explicit about quantity, you would usually add numbers or other words:

• одна тыква
• две тыквы
• несколько тыкв

But in this sentence, the point is the limited selection, not the count.

You mostly know from context, because both киви and манго are commonly indeclinable nouns in Russian.

That means their form often stays the same:

• одно киви / два киви
• одно манго / два манго

So in this sentence, the form itself does not tell you singular vs. plural very clearly. Context does.

Here they are best understood as product names or kinds of food in a list:

• pumpkin, kiwi, and mango

not as carefully counted individual pieces.

Только means only and limits what is available in the store.

So:

• в магазине будут только тыква, киви и манго

means:

• the only things in the store will be pumpkin, kiwi, and mango
• or the store will have only pumpkin, kiwi, and mango

It does not automatically mean that those are the only ingredients the speaker will use. It specifically describes what is available in the shop.

Because the sentence is about the future.

• смогу = I will be able
• могу = I can / am able

The condition is also in the future:

• если в магазине будут ... = if there will be ... / if the store only has ...

So the main clause naturally uses future ability:

• я всё равно смогу приготовить ...
• I will still be able to make ...

Using могу here would shift the meaning toward present or general ability, which does not match the sentence as well.

Because смогу is the normal, idiomatic future form meaning I will be able to.

Russian usually prefers:

• смогу
• сможешь
• сможет

rather than буду мочь, будешь мочь, etc.

Forms like буду мочь are possible in some contexts, but they are much less common and often sound heavier or less natural. For everyday Russian, learners should strongly prefer смочь in the future:

• Я смогу
• Ты сможешь
• Он сможет

Because приготовить is perfective, and here the speaker means achieving a result:

• to make / prepare something successfully

With смогу, Russian often uses a perfective infinitive when the idea is managing to do something completely.

So:

• смогу приготовить = will be able to prepare / will manage to make

If you used готовить, the focus would be more on the process of cooking rather than on producing a finished result. In this sentence, the result matters: making something tasty.

Both can mean something, but they are not identical.

что‑нибудь

This often means:

• something or other
• anything
• some unspecified thing, no matter what exactly

It is very common when the speaker is not being specific and the exact item does not matter.

что‑то

This usually means:

• something
• some particular but unspecified thing

In this sentence, что‑нибудь fits well because the speaker means:

• I’ll still be able to make something tasty, whatever it ends up being

That open-ended, non-specific feeling is exactly what что‑нибудь expresses well.

It agrees with что‑нибудь, which is treated as neuter singular.

That is why you get:

• что‑нибудь вкусное
• что‑то интересное
• что‑нибудь полезное

So вкусное is neuter singular.

In terms of syntax, the whole phrase is the direct object of приготовить. For neuter inanimate words, the accusative looks the same as the nominative, so the form is still:

• вкусное

Because Russian indefinite pronouns with particles like -то, -нибудь, and -либо are normally written with a hyphen.

Examples:

• кто‑то = someone
• что‑то = something
• где‑нибудь = somewhere / anywhere
• какой‑либо = some / any

So:

• что‑нибудь is the standard spelling.

Yes. Russian word order is flexible, and changing it usually changes emphasis rather than the core meaning.

The original order:

• Даже если в магазине будут только тыква, киви и манго, я всё равно смогу приготовить что‑нибудь вкусное.

puts the condition first and then gives the speaker’s response.

You could also say:

• Я всё равно смогу приготовить что‑нибудь вкусное, даже если в магазине будут только тыква, киви и манго.

That means almost the same thing, but now the main point comes first: I’ll still be able to cook something tasty.

So the sentence is flexible, but the original version is very natural and well-balanced.

It most naturally sounds like the speaker is talking about the limited selection available in the store.

In other words:

• Even if the store only has pumpkin, kiwi, and mango, I can still make something tasty.

The focus is not on a formal inventory or on exact counts. It is more about:

• Those are the only ingredients/products available
• That restriction still won’t stop me

So yes, it is about what the speaker has to work with, not about carefully counting one pumpkin, one kiwi, and one mango.