Когда уголь будет готов, мы поджарим овощи на решётке.

Here уголь is a mass noun, so Russian normally uses the singular, just like English can say coal or charcoal without making it plural.

In this context, уголь usually means charcoal for cooking, not coal from a mine. So the sentence is talking about waiting until the charcoal is ready for grilling.

This is a very common difference between English and Russian.

In Russian, in a clause like когда..., you normally use the tense that matches the real time of the action. Since the charcoal will become ready in the future, Russian says:

• Когда уголь будет готов...

English usually avoids will after when, but Russian does not. So this is completely normal Russian.

Because готов is the short form of the adjective готовый.

Russian often uses the short form after to be when describing a temporary state:

• уголь готов = the charcoal is ready
• овощи готовы = the vegetables are ready

The full form готовый is more often used before a noun:

• готовый ужин = a ready meal / a prepared dinner

So in this sentence, будет готов is the normal predicate form: will be ready.

Готов agrees with уголь, which is a masculine singular noun.

So the short-form adjective changes like this:

• masculine singular: готов
• feminine singular: готова
• neuter singular: готово
• plural: готовы

Since уголь is masculine singular, готов is the correct form.

Поджарим is a perfective future form. It suggests a completed action: once the charcoal is ready, we’ll grill / fry / roast the vegetables.

This fits the sentence well because the action is a single event happening after another event.

Compare:

• мы поджарим овощи = we’ll grill/cook the vegetables (as a completed action)
• мы будем жарить овощи = we’ll be grilling the vegetables (focus on the process)
• мы жарим овощи = we are grilling vegetables / we grill vegetables

So поджарим is natural when talking about what we’ll do next.

They are related, but not identical.

• жарить = to fry / roast / grill
• поджарить = to fry / roast / grill something until it is nicely browned, often slightly or briefly

In everyday use, поджарить овощи can mean grill the vegetables or cook them until browned.

So in this barbecue context, поджарим овощи sounds very natural.

Because на here means on, and решётке is the prepositional singular form of решётка.

• решётка = grate, rack, grill grate
• на решётке = on the grate / on the grill rack

This is the normal construction for location:

• на столе = on the table
• на тарелке = on the plate
• на решётке = on the grate

So the phrase means the vegetables will be cooked on the grill grate.

Yes. Решётка is a general word meaning grate, grid, rack, bars, depending on context.

For example, it can refer to:

• a cooking grate
• a metal grid
• window bars
• a drainage grate

In this sentence, because of уголь and овощи, it clearly means the grill grate.

Russian uses a comma to separate the subordinate clause from the main clause.

So:

• Когда уголь будет готов, мы поджарим овощи на решётке.

The first part is the time clause:

• Когда уголь будет готов = When the charcoal is ready

The second part is the main clause:

• мы поджарим овощи на решётке = we’ll grill the vegetables on the grate

This comma is required in standard Russian punctuation.

Yes, Russian could leave it out:

• Когда уголь будет готов, поджарим овощи на решётке.

That would still be natural, because the verb ending -им already shows we.

Including мы can make the subject clearer or slightly more explicit, but it is not always necessary. Russian often omits subject pronouns when the meaning is obvious.

The given word order is very natural, but Russian word order is fairly flexible.

The basic sentence is:

• Когда уголь будет готов, мы поджарим овощи на решётке.

You could also say:

• Мы поджарим овощи на решётке, когда уголь будет готов.

Both mean essentially the same thing. The version with когда... first gives the time setting first: When the charcoal is ready...

It is pronounced roughly rye-SHYOT-kye.

The letter ё always shows the yo sound, so:

• решётка = not reshetka, but reshyotka

In many printed texts, Russian often writes е instead of ё, but the correct spelling here is решётке. For learners, seeing ё is very helpful because it shows the pronunciation clearly.