syouga to ninniku wo tukatta ryouri ha, samui yoru ni taberu to karada ga atatakaku naru ki ga simasu.

Because 使った料理 is a relative clause in Japanese.

It literally means the dishes/cuisine that used ginger and garlic.

In Japanese, a verb in plain form can come directly before a noun and describe it:

• 使った料理 = dishes that used ...
• 食べる人 = person who eats
• 買った本 = book that (someone) bought

So しょうがとにんにくを使った料理 means dishes made using ginger and garlic.

Because しょうがとにんにく is being treated as one combined object: ginger and garlic.

So:

• しょうがとにんにくを使った = used ginger and garlic

The particle と connects the two nouns, and を marks the whole noun phrase as the object of 使った.

You could think of it like this:

• [しょうがとにんにく] を 使った

not

• しょうが を にんにく を 使った

Here, と means and.

So:

• しょうがとにんにく = ginger and garlic

This is the normal particle used to connect nouns in a straightforward list.

は marks the topic of the sentence.

The sentence is talking about dishes made with ginger and garlic as the thing under discussion:

• しょうがとにんにくを使った料理は、...

This is like saying:

• As for dishes made with ginger and garlic, ...
• When it comes to dishes made with ginger and garlic, ...

So は does not mark the subject in a simple English sense; it introduces the topic that the rest of the sentence comments on.

Here, に marks the time when something happens.

• 寒い夜に食べる = eat it on / during a cold night

Japanese often uses に with specific times or time-like expressions to show when an action happens.

In this sentence, it means the effect is being discussed specifically when eaten on a cold night.

No. This と is a different と from the one meaning and.

Here, 食べると is a conditional pattern meaning something like:

• if (you) eat it
• when (you) eat it

In this sentence, it suggests a natural/resulting effect:

• 寒い夜に食べると、体が温かくなる
• If/when you eat it on a cold night, your body gets warm

This と is often used for results that are seen as natural, expected, or automatic.

Because the sentence is describing a change in state happening to the body:

• 体が温かくなる = the body becomes warm

Here:

• 体が = the body is the thing that changes
• 温かくなる = becomes warm

If you said 体を温かくする, that would mean to make/warm the body more actively or intentionally.

This sentence is focusing on the result:

• your body gets warm

rather than on some agent deliberately warming it.

Because 温かい is an i-adjective, and when an i-adjective connects to なる, the い changes to く:

• 温かい → 温かくなる
• 高い → 高くなる
• 早い → 早くなる

So:

• 温かくなる = become warm

This is a very common grammar pattern.

気がします means I feel / it feels like / I have the impression that ...

So:

• 体が温かくなる気がします = I feel like the body gets warm
• more naturally: I feel like it warms you up

This makes the statement softer and more subjective. The speaker is not presenting it as a hard scientific fact; they are expressing a personal impression.

Because 気がします makes the sentence less direct and more cautious.

Compare:

• 体が温かくなります = It makes your body warm / Your body becomes warm.
• 体が温かくなる気がします = I feel like it makes your body warm.

The version with 気がします sounds:

• more personal
• less absolute
• softer and more natural in many everyday contexts

Japanese often prefers this kind of softened expression.

Because 体 is the thing that becomes warm.

In:

• 体が温かくなる

the body is the subject of なる.

So が marks what undergoes the change.

A useful way to think about it:

• 何が温かくなる？ → 体が
• What becomes warm? → The body

Yes, Japanese often leaves subjects unstated when they are understood from context.

In this sentence:

• 気がします strongly suggests the speaker is the one feeling this
• so the hidden subject is effectively I

Also, 食べる does not state who eats it. Depending on context, it could mean:

• when you eat it
• when we eat it
• when people eat it
• when one eats it

Japanese often leaves that kind of subject unstated if it is not important.

That is very common for food words.

These words can be written in kanji:

• 生姜 = しょうが
• 大蒜 or 蒜 = にんにく

But in everyday writing, especially in recipes, menus, or learner materials, hiragana is often preferred because:

• it is easier to read
• it looks more natural for some common food items
• some kanji are uncommon or visually difficult

So using hiragana here is completely normal.