Amasamos hasta el punto de que la masa cambió.

Amasamos is the 1st person plural form of amasar (to knead): we kneaded.

In this sentence, it is most naturally understood as the preterite (completed past action): we kneaded.

A useful thing to know: for many -ar verbs, the nosotros form in the present and the preterite looks the same:

• amasamos = we knead
• amasamos = we kneaded

So the context tells you which one it is. Here, cambió clearly puts the sentence in the past, so amasamos is understood as we kneaded.

Because in regular -ar verbs, the nosotros form of the preterite is written the same as the present:

• hablamos = we speak / we spoke
• trabajamos = we work / we worked
• amasamos = we knead / we kneaded

Spanish simply leaves this ambiguity to be solved by context. In your sentence, cambió makes it clear that the speaker is talking about a finished past event.

Hasta el punto de que means to the point that or to such an extent that.

It introduces the result of what happened before:

• Amasamos = we kneaded
• hasta el punto de que la masa cambió = to the point that the dough changed

So the whole structure shows cause/result or degree/result:

• we kneaded so much / so far that the dough changed

It is a fairly natural, slightly more formal or descriptive expression than just saying until.

Because the fixed expression is hasta el punto de que.

The noun punto is part of the phrase, and Spanish uses de before que in this structure:

• hasta el punto de que...

You can think of it as built from:

• el punto de... = the point of...
• then followed by que...

This is normal Spanish phrase structure, not something you usually change word by word.

Yes, you could, but it is not exactly the same nuance.

• Amasamos hasta que la masa cambió = We kneaded until the dough changed
• Amasamos hasta el punto de que la masa cambió = We kneaded to the point that the dough changed

The version with hasta que sounds more direct and straightforward. The version with hasta el punto de que emphasizes the degree or extent of the kneading.

So both can work, but the original sentence highlights that the kneading reached a level where a noticeable change happened.

Spanish often uses the definite article more often than English does.

Here, la masa means the dough, referring to the specific dough being worked on. In English, you might sometimes say just dough, but in Spanish, la masa sounds very natural.

So even if English might prefer something like:

• the dough changed or sometimes just
• dough changed

Spanish strongly prefers:

• la masa cambió

Yes. Amasar means to knead, and masa means dough. They are etymologically related.

That is why the sentence has a nice internal connection:

• amasamos = we kneaded
• la masa = the dough

For a learner, this is helpful vocabulary:

• masa = dough
• amasar = to knead
• amasado = kneaded / kneading, depending on context

Cambió is the preterite, which presents the change as a completed event:

• the dough changed

That fits well here because the sentence describes a result that happened after enough kneading.

If you used cambiaba, that would be the imperfect, which usually suggests an ongoing, repeated, or background action:

• it was changing
• it used to change

That would sound less natural here unless you were describing the process in a different way.

So:

• cambió = a clear completed change
• cambiaba = an ongoing/background change

Because the sentence is stating a real result.

La masa cambió is presented as something that actually happened, so Spanish uses the indicative:

• cambió

The subjunctive is more common when the clause expresses something hypothetical, desired, doubtful, or not yet real. But here the dough really did change, so the indicative is the normal choice.

The structure is:

• Amasamos = main verb
• hasta el punto de que = linking expression
• la masa cambió = subordinate clause showing the result

So the pattern is roughly:

[main action] + [to the point that] + [result]

That is a very common way in Spanish to show that one action led to a result.

Not really in practice.

• amamos comes from amar = we love / we loved
• amasamos comes from amasar = we knead / we kneaded

They may look a little similar at first, but amasamos has an extra syllable and clearly belongs to amasar. In a food-related sentence with la masa, a native speaker will immediately understand it as we kneaded.

Yes, it is grammatical and natural, though it sounds a bit more deliberate or explanatory than the simplest everyday version.

A more direct everyday alternative might be:

• Amasamos hasta que la masa cambió.

The original version,

• Amasamos hasta el punto de que la masa cambió, is perfectly good Spanish and puts more emphasis on the extent of the kneading. It sounds a little more descriptive or careful.