Σήμερα στο πρωινό είχα βρώμη με λίγες σταφίδες και μετά λίγο τσουρέκι, κι έτσι δεν πείνασα μέχρι το μεσημέρι.

Yes. In Greek, έχω / είχα can be used very naturally with food and meals, much like English have:

• Για πρωινό είχα βρώμη. = I had oatmeal for breakfast.
• Χθες είχα σαλάτα για μεσημεριανό. = Yesterday I had salad for lunch.

So είχα βρώμη does not necessarily focus on possession; it means I ate / I had oatmeal.

Yes, για πρωινό is also very common.

• στο πρωινό literally means at breakfast / for breakfast
• για πρωινό literally means for breakfast

Both can work in everyday Greek, though για πρωινό is often the more straightforward choice when talking about what someone ate.

So these are both natural:

• Σήμερα στο πρωινό είχα βρώμη...
• Σήμερα για πρωινό είχα βρώμη...

The version with στο πρωινό sounds like it is placing the event in the breakfast occasion itself.

Βρώμη literally means oats, but in everyday usage it can also refer to oatmeal / porridge / oat-based breakfast depending on context.

So in a breakfast sentence like this, a Greek speaker may say είχα βρώμη and mean they ate oats or oatmeal.

If someone wanted to be more specific, they might say something like:

• κουάκερ for porridge/oatmeal in some contexts
• νιφάδες βρόμης for oat flakes

But βρώμη by itself is very common and natural.

Because λίγος, λίγη, λίγο agrees with the noun in gender and number.

Here:

• σταφίδες is feminine plural
• so you get λίγες σταφίδες = a few raisins

But:

• τσουρέκι is neuter singular
• so you get λίγο τσουρέκι = a little tsoureki / some tsoureki

This also reflects the difference between:

• countable plural items → λίγες σταφίδες
• an uncounted amount of something → λίγο τσουρέκι

They are in the accusative, because με takes the accusative.

So:

• με λίγες σταφίδες
• με λίγο τσουρέκι

In these examples, the accusative forms happen to look the same as the nominative forms, especially for τσουρέκι and for plural σταφίδες.

Μετά here means after that / then.

Yes, the verb is understood rather than repeated. The full idea is something like:

• και μετά είχα λίγο τσουρέκι
• or και μετά έφαγα λίγο τσουρέκι

But Greek often leaves out repeated material when it is obvious from context. So και μετά λίγο τσουρέκι is a natural ellipsis: and then some tsoureki.

Κι is just a shortened form of και.

Before a word beginning with a vowel, Greek very often uses κι instead of και, especially in natural speech and writing:

• κι έτσι
• κι εγώ
• κι αυτός

So:

• και έτσι
• κι έτσι

both mean the same thing, but κι έτσι sounds smoother and is very common.

Because πείνασα means I got hungry / I felt hungry, not just I was hungry.

So:

• δεν πείνασα μέχρι το μεσημέρι = I didn’t get hungry until noon / lunchtime
• δεν ήμουν πεινασμένος μέχρι το μεσημέρι = I wasn’t hungry until noon

The first version is more event-like: hunger never arrived before noon. The second describes a state.

In this sentence, δεν πείνασα is very natural because the speaker is talking about when hunger finally appeared.

The aorist is used because the sentence refers to the occurrence of becoming hungry as a single event.

• πεινάω = I am hungry / I get hungry
• πείνασα = I got hungry

In δεν πείνασα μέχρι το μεσημέρι, the idea is:

• up to lunchtime, the event getting hungry did not happen

That is why the aorist works well here.

It can mean either, depending on context.

Το μεσημέρι can refer to:

• noon / midday
• lunchtime / the middle of the day

In this sentence, both ideas fit well:

• I wasn’t hungry until noon
• I wasn’t hungry until lunchtime

Greek often uses το μεσημέρι in this broad everyday sense.

Greek often uses the definite article with parts of the day and time expressions where English does not.

So Greek says:

• το πρωί = in the morning
• το βράδυ = in the evening / at night
• το μεσημέρι = at noon / at lunchtime

That article is completely normal and often required in Greek.

Yes, Greek word order is fairly flexible.

κι έτσι means and so / therefore, and placing it before the verb is very natural:

• κι έτσι δεν πείνασα μέχρι το μεσημέρι

You could also hear variations like:

• δεν πείνασα έτσι μέχρι το μεσημέρι — less natural here
• οπότε δεν πείνασα μέχρι το μεσημέρι — using οπότε instead of κι έτσι

The given word order is natural because it clearly presents the result: breakfast happened, and so the speaker did not get hungry until later.

Τσουρέκι is a traditional Greek sweet bread, often slightly rich and aromatic, sometimes flavored with ingredients like μαχλέπι or mastic. It is not easy to translate with one exact English word, so many learners simply keep the Greek word tsoureki.

In this sentence, λίγο τσουρέκι means a little/some tsoureki.

Yes, but the nuance is a little different.

• είχα βρώμη... = I had oatmeal...
  This is very natural when talking about what one ate.
• έφαγα βρώμη... = I ate oatmeal...
  This is a bit more direct and action-focused.

Both are correct. Είχα sounds especially natural in the context of meals, much like English I had oatmeal for breakfast.