Ik drink ’s ochtends koffie uit een grote mok.

’s ochtends means in the morning or in the mornings.

The ’s is an old-fashioned leftover from an older Dutch case form, also seen in expressions like:

• ’s morgens
• ’s avonds
• ’s nachts

You do not need to analyze it as a separate word in everyday learning. It is best learned as a fixed time expression: ’s ochtends.

That -s is part of the fixed expression ’s ochtends. It is not a normal plural here.

Dutch has several set expressions for parts of the day that use this older form:

• ’s ochtends = in the morning
• ’s middags = in the afternoon
• ’s avonds = in the evening
• ’s nachts = at night

So the learner should usually just memorize ’s ochtends as one chunk.

Because koffie is being used as an uncountable noun, like coffee in English.

So:

• Ik drink koffie = I drink coffee
• Ik drink een koffie would usually mean something like I’m having a coffee / one coffee, which is less neutral and more context-dependent

In this sentence, the speaker is talking about coffee as a drink in general, so no article is needed.

Because with drinking, Dutch often uses uit to mean out of / from a cup, glass, mug, or bottle.

So:

• drinken uit een mok = to drink from a mug
• eten uit een kom = to eat from a bowl

Using in would focus more on where the coffee is located, not the source you drink from.
So Ik drink koffie uit een grote mok naturally means I drink coffee from a big mug.

Because Dutch adjectives usually take -e before a noun.

Here, mok is a de-word (common gender noun), so with een you get:

• een grote mok

Compare:

• de mok → de grote mok
• een grote mok

The form without -e mainly appears with an indefinite singular het-word:

• een groot huis
  because huis is a het-word

So:

• een grote mok ✅
• een groot mok ❌

You mostly have to learn noun gender together with the noun:

• de mok
• het huis
• de tafel

There are some patterns in Dutch, but many nouns simply need to be memorized with their article. That is why it is very helpful to learn vocabulary as:

• de mok = mug
• de koffie = coffee
• de ochtend = morning

Knowing that mok is a de-word helps you choose the right adjective ending: een grote mok.

Yes. Dutch main clauses usually follow the verb-second rule: the finite verb comes in the second position.

In your sentence:

• Ik = position 1
• drink = position 2

Then the other parts follow.

So this is correct:

• Ik drink ’s ochtends koffie uit een grote mok.

You can also move ’s ochtends to the front:

• ’s Ochtends drink ik koffie uit een grote mok.

Notice what happens then: drink still stays in second position, and ik moves after it.

Both versions are natural. The fronted version puts more emphasis on in the morning.

It can often be understood either as:

• in the morning
  or
• in the mornings

The exact meaning depends on context.

For example:

• Ik drink ’s ochtends koffie.
  could mean I drink coffee in the morning as a general habit.

If you want to be very explicit about a one-time event, Dutch might also use:

• vanmorgen = this morning
• in de ochtend = in the morning

So ’s ochtends often has a habitual or general-time feeling.

Learners often find this expression awkward at first.

A simple practical guide:

• ’s is very reduced, almost like a soft s sound attached to the next word
• ochtends begins with the Dutch ch sound, like the throaty sound in Bach or Scottish loch for many speakers

So you should not pronounce ’s as a full English ess. It is much lighter and closely connected to ochtends.

A rough learner-friendly approximation might be:

• soch-tuhns

But it is better to listen to native audio, because the exact sound is hard to represent in English spelling.

Both can refer to something you drink from, but they suggest different things.

• mok = mug, usually larger and more sturdy
• kopje = cup, often smaller, like a coffee cup or teacup

So:

• een grote mok suggests a big mug
• een kopje koffie often means a cup of coffee

In your sentence, mok fits well because it emphasizes the container as a mug.

Yes. ’s morgens is very common and often overlaps with ’s ochtends.

Very roughly:

• ’s ochtends = in the morning
• ’s morgens = in the morning / mornings

In many situations, they are interchangeable.
However, ochtend is the more direct noun meaning morning, while morgen also relates to tomorrow in other contexts, so learners sometimes find ’s ochtends clearer.

Both are natural Dutch.