L’avocado è maturo, quindi lo mangiamo oggi.

Because avocado starts with a vowel, Italian normally shortens il to l’ before it.

• il libro → the book
• l’avocado → the avocado

So l’avocado is just the normal masculine singular article used before a vowel.

In Italian, avocado is treated as a masculine singular noun, so it takes masculine forms:

• l’avocado
• è maturo
• lo mangiamo

That is why the adjective is maturo and the object pronoun is lo. If the noun were feminine, those forms would be different.

The accent distinguishes è (is) from e (and).

• è = is
• e = and

So in this sentence, L’avocado è maturo means The avocado is ripe, not The avocado and ripe.

Adjectives in Italian usually agree with the noun they describe in gender and number.

Since avocado is masculine singular, the adjective must also be masculine singular:

• masculine singular: maturo
• feminine singular: matura
• masculine plural: maturi
• feminine plural: mature

So l’avocado è maturo is correct.

Quindi means so, therefore, or as a result.

In this sentence:

• L’avocado è maturo = The avocado is ripe
• quindi = so / therefore
• lo mangiamo oggi = we’re eating it today

It links the two ideas logically: the avocado is ripe, so we eat it today.

Lo is a direct object pronoun meaning it, referring back to l’avocado.

Instead of repeating the noun, Italian uses the pronoun:

• Mangiamo l’avocado oggi. = We’re eating the avocado today.
• Lo mangiamo oggi. = We’re eating it today.

Because avocado is masculine singular, the pronoun is lo.

In Italian, unstressed object pronouns like lo, la, li, le usually come before a conjugated verb.

So Italian says:

• Lo mangiamo oggi.

not:

• Mangiamo lo oggi. ❌

This is a very common word order pattern in Italian.

Not in this sentence.

Lo can shorten to l’ before a word that begins with a vowel:

• Lo ascolto → L’ascolto

But here the next word is mangiamo, which begins with m, so the full form lo is used:

• lo mangiamo

Italian often drops subject pronouns when they are already clear from the verb ending.

• mangiamo = we eat / we are eating

Because -iamo tells you the subject is we, Italian usually does not need noi.

You could say noi lo mangiamo oggi, but it is usually only added for emphasis or contrast.

Italian often uses the present tense for a planned action in the near future, especially when a time expression makes it clear.

Here, oggi (today) makes the timing clear, so lo mangiamo oggi naturally means:

• we eat it today
• we’re eating it today
• we’ll eat it today

Depending on context, all of these can be good English translations.

Italian is fairly flexible with word order, but putting oggi at the end sounds natural here.

• Lo mangiamo oggi. = We’re eating it today.

You could also hear:

• Oggi lo mangiamo.
• Lo oggi mangiamo is much less natural.

The version in your sentence is a very normal, neutral way to say it.

It is very natural here because quindi introduces the result of the first clause.

• L’avocado è maturo, quindi lo mangiamo oggi.

The comma helps separate the two ideas:

1. the avocado is ripe
2. as a result, we eat it today

In short, the comma is appropriate and common in this kind of sentence.