Agita la sartén suavemente para mezclar los ingredientes.

Because this is the tú affirmative imperative of agitar (to shake).

• Infinitive: agitar
• tú command: agita

Spanish often uses this form for direct instructions, recipes, and cooking steps. In English we just use the base verb (Shake the pan), but in Spanish the command form changes depending on who you are speaking to.

For comparison:

• (tú) agita = shake
• (usted) agite = shake (formal)
• (vosotros) agitad = shake (plural, informal, common in Spain)
• (ustedes) agiten = shake (plural)

In Spanish, subject pronouns are often left out because the verb ending already shows who the subject is.

So agita already tells you this is a command directed at tú. Saying tú agita would usually sound unnecessary, and in many cases unnatural, unless you want special emphasis.

This omission of subject pronouns is very common in Spanish:

• Mezcla bien.
• Corta la cebolla.
• Añade sal.

Spanish uses definite articles (el, la, los, las) more often than English does.

Here, la sartén means the pan. In recipe instructions, Spanish normally includes the article:

• Agita la sartén
• Lava las patatas
• Corta la cebolla

English often drops the article in instructions (shake pan, add salt), but Spanish usually keeps it.

Also, sartén is normally feminine in standard Spanish, so:

• la sartén

Because grammatical gender in Spanish is not always predictable from the ending.

A lot of nouns ending in consonants are masculine, but sartén is a feminine noun:

• la sartén

This is something you mainly just learn with the noun. It is a good idea to memorize nouns together with their article:

• la sartén
• el cuchillo
• la cuchara

Suavemente is an adverb meaning gently or softly, and here it modifies the verb agita.

Spanish adverbs often come after the verb or after the object:

• Agita suavemente la sartén
• Agita la sartén suavemente

Both are possible, but Agita la sartén suavemente sounds very natural. The sentence is basically saying: Shake the pan gently.

It is formed from the adjective suave (soft, gentle) plus -mente, which is the usual way to form many adverbs in Spanish.

• suave → suavemente

This is similar to English gentle → gently, though the formation is not exactly the same.

Other examples:

• rápido → rápidamente = quickly
• lento → lentamente = slowly
• claro → claramente = clearly

Para here expresses purpose: in order to or so as to.

So:

• para mezclar los ingredientes = to mix the ingredients / in order to mix the ingredients

This is a very common structure in Spanish:

• Usa una cuchara para remover la sopa.
• Abre la bolsa para sacar el pan.
• Agita la sartén para mezclar los ingredientes.

After para, Spanish often uses the infinitive when the subject is the same.

Because after para expressing purpose, Spanish normally uses the infinitive if no new subject is introduced.

So:

• para mezclar = to mix

This is like English to mix.

If Spanish introduces a different subject, it may use para que + subjunctive instead:

• Agita la sartén para mezclar los ingredientes.
  = same person doing both actions
• Agita la sartén para que no se peguen los ingredientes.
  = different grammatical structure

Again, Spanish often uses the definite article where English might not.

Here los ingredientes means the ingredients, referring to the ingredients already involved in the recipe or dish.

In instructions, this is very common:

• mezclar los ingredientes
• lavar las verduras
• calentar el aceite

English sometimes sounds more natural without the article in this kind of context, but Spanish usually includes it.

Sometimes, but not with exactly the same meaning.

• mezclar = to mix, combine
• remover = to stir

In this sentence, agita la sartén describes the physical action of moving the pan, and para mezclar los ingredientes explains the purpose: to mix the ingredients together.

If you said para remover los ingredientes, that would lean more toward to stir the ingredients, which is slightly different. Since you are shaking the pan rather than stirring with a utensil, mezclar works very well here.

Yes, it is understandable and natural, especially in instructional or recipe-style language.

In cooking, Spanish can describe this kind of action in a few ways depending on the exact movement:

• agitar la sartén = shake the pan
• mover la sartén = move the pan
• dar un meneo a la sartén = give the pan a shake
• saltear is different: it usually refers to sautéing/stir-frying, not just shaking

So Agita la sartén suavemente is a perfectly good instructional sentence.

The stress is on the last syllable:

• sar-TÉN

It has a written accent because words ending in n, s, or a vowel are normally stressed on the second-to-last syllable, unless an accent mark shows otherwise.

Without the accent, Spanish spelling rules would suggest a different stress pattern. The accent mark tells you clearly that the stress falls on -tén.

Yes, some changes are possible.

For example:

• Agita suavemente la sartén para mezclar los ingredientes.
• Para mezclar los ingredientes, agita la sartén suavemente.

These are all grammatical. The original sentence is very natural because it gives:

1. the action
2. how to do it
3. the purpose

That makes it sound clear and practical, which fits recipe instructions very well.