Στην αυτόλυση χρησιμοποιούμε αλεύρι ολικής άλεσης και αλεύρι σίκαλης.

Στην is the usual contracted form of σε + την.

• σε = in / at / to
• την = the feminine singular accusative article

So στην αυτόλυση literally comes from σε την αυτόλυση. In normal modern Greek, the contracted form is what you usually say and write.

Examples:

• στο = σε + το
• στη / στην = σε + τη(ν)
• στους = σε + τους

Greek uses the definite article much more often than English does. So with nouns referring to processes, activities, fields, or abstract things, Greek often includes the where English may not.

So Greek naturally says:

• στην αυτόλυση

even if English might simply say:

• in autolysis

This is very normal Greek usage and not something special about this sentence.

Because the preposition σε takes the accusative in Modern Greek.

So:

• σε + accusative
• στην αυτόλυση = in the autolysis / during autolysis

Even though English uses in, Greek still uses the accusative after σε.

Χρησιμοποιούμε is the 1st person plural present active form of χρησιμοποιώ = to use.

So it means:

• we use

Breakdown:

• verb stem: χρησιμοποι-
• ending -ούμε = we

This form is common in explanations, instructions, recipes, and teaching language:

• χρησιμοποιούμε = we use
• almost like English instructional we use or sometimes one uses

Because Greek verb endings already show the subject.

So χρησιμοποιούμε already means we use, and you do not need to add εμείς.

You could say:

• Εμείς χρησιμοποιούμε...

but that would add emphasis, like:

• we use...

In a neutral sentence, Greek normally leaves the subject pronoun out.

Because αλεύρι is being used in a general, indefinite way, like a material noun.

So:

• χρησιμοποιούμε αλεύρι... = we use flour...

This is similar to English, where you also often say we use flour, not we use the flour, unless you mean some specific flour already mentioned.

If Greek wanted to refer to a particular flour, it could use the article:

• το αλεύρι

But here the sentence is talking about types of flour in general.

Ολικής άλεσης is a fixed-type descriptive phrase, not a simple adjective directly agreeing with αλεύρι.

It is built with two genitives:

• ολικής = genitive singular of ολικός (whole / wholegrain-related)
• άλεσης = genitive singular of άλεση (milling / grinding)

So the phrase literally means something like:

• of whole grinding/milling

And together:

• αλεύρι ολικής άλεσης = wholemeal flour / whole wheat flour

This is a standard Greek way to describe this kind of flour. Even though αλεύρι is neuter, ολικής άλεσης does not have to match it as a neuter adjective phrase, because it is a genitive construction.

Greek commonly expresses this idea with a noun in the genitive:

• σίκαλη = rye
• σίκαλης = genitive singular, of rye

So:

• αλεύρι σίκαλης = flour of rye = rye flour

This is a very normal pattern in Greek:

• χυμός πορτοκαλιού = orange juice literally juice of orange
• σούπα λαχανικών = vegetable soup literally soup of vegetables

So σίκαλης is genitive because it tells you what kind of flour it is.

The repetition makes the sentence clearer and neatly presents two separate ingredients/types:

• αλεύρι ολικής άλεσης
• αλεύρι σίκαλης

Greek can sometimes omit the repeated noun if the meaning is obvious, but repeating αλεύρι sounds clear and natural here, especially in instructional or recipe-style language.

If you removed the second αλεύρι, the sentence might still be understandable, but the repeated noun makes the structure more explicit.

Yes, Greek word order is more flexible than English word order, because endings carry a lot of grammatical information.

This sentence has a very natural order for explanation/instruction:

• Στην αυτόλυση = setting/context first
• χρησιμοποιούμε = verb
• αλεύρι ολικής άλεσης και αλεύρι σίκαλης = what is used

You could rearrange parts for emphasis, but this version sounds very natural and straightforward.

It can feel like either, depending on context.

With process nouns like this, σε + accusative often gives the sense of:

• in
• during
• at the stage of

So Στην αυτόλυση χρησιμοποιούμε... can be understood as:

• In the autolysis stage, we use...
• During autolysis, we use...

Greek often uses this structure to place something within a step or phase of a process.