Learn Hardcore Italian: A colazione mangio lo yogurt con cereali e pera a pezzi. - For breakfast I eat yogurt with cereal and chopped pear.

A colazione = at breakfast (time frame). Idiomatic in statements of habit: A colazione mangio lo yogurt.
Per colazione = for breakfast (purpose/selection). Common in questions and choices: Cosa mangi per colazione? / Prendo uno yogurt per colazione.

Can I move A colazione to the end?

Yes. Both are natural:

A colazione mangio lo yogurt...
Mangio lo yogurt... a colazione. A comma after an initial A colazione is optional for a pause.

Why lo yogurt and not il yogurt?

Because masculine nouns beginning with certain sounds take lo (and gli in the plural). This includes words starting with s+consonant, z, gn, ps, x, and also y. So:

singular: lo yogurt
plural: gli yogurt You may hear il yogurt, but lo yogurt is the standard form.

Do I have to use the definite article with yogurt? What about dello yogurt or no article?

All three occur, with nuances:

Mangio lo yogurt: typical choice/habit (or a specific yogurt).
Mangio dello yogurt: some yogurt (partitive, focuses on quantity).
Mangio yogurt: zero article, also natural in habits and lists. In your sentence, lo yogurt works well to express a usual breakfast item.

Why is there no article before cereali and pera?

After con, it’s very common to list ingredients without articles when they’re not specific: con cereali e pera. Adding articles would point to specific items: con i cereali e la pera (the cereals and the pear we both know about).

Should it be una pera a pezzi?

You can add it if you want to specify the number: una pera a pezzi. In ingredient-style lists, Italians often omit articles/numbers: con cereali e pera a pezzi simply means “with cereal and cut pear.” For more than one: con pere a pezzi / con due pere a pezzi.

Why is cereali plural? What’s the singular?

In Italian, breakfast “cereal” is typically plural: i cereali. The singular cereale refers to an individual grain/type (a cereal grain). So you’ll usually see cereali in this context.

What’s the difference between pera a pezzi and pezzi di pera?

Both are correct:

pera a pezzi emphasizes the pear being cut up.
pezzi di pera highlights the pieces themselves. Meaning-wise, they’re interchangeable here.

Why a pezzi and not in pezzi?

a pezzi = cut into pieces (preparation/manner).
in pezzi = in pieces as in “broken/in bits” (often damaged). For food, use a pezzi.

Can I say a pezzetti, a cubetti, or a spicchi?

Yes, they give more detail:

a pezzetti: into little pieces.
a cubetti/a dadini: into small cubes.
a spicchi: into wedges/slices (common with fruit like pears/apples).

Why is the subject io omitted in mangio?

Italian is a pro‑drop language. The verb ending shows the subject, so mangio already means “I eat.” Use Io mangio only for emphasis or contrast.

How do I pronounce the key words?

yogurt: roughly “YOH-goort” (hard g as in “go”; tapped r).
cereali: “cheh-reh-AH-lee” (the c before e is like “ch” in “chair”).
pera: “PEH-rah.”
pezzi: “PEHT-tsee” (zz like “ts”).

Do I ever need ed instead of e before pera or yogurt?

Use e here: cereali e pera. The form ed is mainly used before words starting with e (and sometimes i) to avoid a clunky sound, e.g., ed enorme, ed io. Before yogurt, Italians normally keep e: e yogurt is fine; ed yogurt is rare/stylistic.

Could I say yogurt ai cereali instead of yogurt con cereali?

Yes.

yogurt con cereali: yogurt served with cereal (general).
yogurt ai cereali: yogurt “with cereal” as an ingredient/flavor (you’ll see this on packaging). In everyday speech, con is very common and neutral.

Are partitives like dei cereali or della pera a pezzi okay?

Yes: lo yogurt con dei cereali e della pera a pezzi is grammatical and highlights “some” quantity. Many speakers omit the partitive in simple ingredient lists, so con cereali e pera a pezzi sounds a bit leaner and just as natural.

Should it be mangio or bevo with yogurt?

Use mangiare for spoonable yogurt: Mangio lo yogurt. Use bere for drinkable yogurt: Bevo lo yogurt or uno yogurt da bere.

Why not alla colazione?

For meals as time frames, Italian uses a without the article: a colazione / a pranzo / a cena. You use alla colazione only when referring to a specific event: alla colazione di lavoro (“at the business breakfast”).