En skefuld vanilje er nok, men min niece vil altid have to skefulde i sin varme mælk.

Because skefuld is a common-gender noun in Danish, so it takes en in the indefinite singular: en skefuld.

A useful thing to remember is that the gender belongs to the whole noun, not to the parts it is made of. So even though skefuld is a compound, you still just learn it as:

• en skefuld = a spoonful

The noun skefuld has the plural form skefulde.

So the basic forms are:

• en skefuld = a spoonful
• to skefulde = two spoonfuls

This pattern is common with nouns ending in -fuld:

• en håndfuld → to håndfulde
• en skefuld → to skefulde

So this is something you mostly learn as a set form.

After words for quantities, containers, and measures, Danish often puts the substance directly after the noun, without af.

So en skefuld vanilje is completely natural, just like:

• en skefuld sukker = a spoonful of sugar
• et glas vand = a glass of water
• en kop kaffe = a cup of coffee

English uses of here, but Danish very often does not.

Here vil have means something closer to wants or insists on having, not simple future.

So:

• min niece vil altid have to skefulde
  = my niece always wants two spoonfuls / always insists on having two spoonfuls

This is very common in Danish. Vil can express willingness, desire, or intention, not just future time.

Because vil is a modal verb, and modal verbs in Danish are followed by the bare infinitive.

So you say:

• vil have
• kan komme
• skal gå
• må tage

not:

• vil at have
• kan at komme

This is similar to English will have, can come, must go.

In a normal main clause, Danish usually places sentence adverbs like altid, ikke, ofte, and aldrig after the finite verb and before the infinitive or the main verb phrase.

So:

• min niece vil altid have ...

This is the most natural order.

Very roughly:

• min niece = subject
• vil = finite verb
• altid = adverb
• have = infinitive

That placement is one of the most important word-order patterns in Danish.

Because niece is a common-gender noun: en niece.

The possessive forms change according to the gender and number of the noun that follows:

• min
  • common gender singular
• mit
  • neuter singular
• mine
  • plural

So:

• min niece
• mit hus
• mine bøger

It depends on the noun being possessed, not on the person who owns it.

Because sin is the reflexive possessive. It is used when the possessor is the same as the subject of the clause.

Here, the subject is min niece, and the milk belongs to min niece, so Danish uses sin:

• min niece vil altid have to skefulde i sin varme mælk

If you said hendes varme mælk, it would usually suggest someone else’s milk, or at least sound less naturally reflexive.

This is a very important contrast in Danish:

• sin/sit/sine = his/her/their own
• hans/hendes/deres = someone else’s, or non-reflexive possession

Because after a possessive like sin, the adjective usually takes the -e form.

Compare:

• varm mælk = warm milk
• sin varme mælk = her own warm milk

This -e form is the normal weak/definite-style adjective form used after words like:

• min
• din
• sin
• denne
• vores

So varme is there because the noun phrase has the possessive sin.

Here nok means enough or sufficient.

So:

• En skefuld vanilje er nok
  = one spoonful of vanilla is enough

This is different from another common use of nok, where it can mean probably. Context tells you which meaning is intended.

For example:

• Det er nok. = That is enough.
• Han kommer nok senere. = He will probably come later.

Because men is a coordinating conjunction, and it does not count as the first element inside the clause for Danish word order.

So after men, you start a new main clause in the normal way:

• men min niece vil altid have ...

If nothing else is placed first, the clause begins with the subject, then the finite verb.

Danish still follows the verb-second principle, but men stands outside that structure.

Because Danish can leave it out when it is already understood from the context.

So:

• En skefuld vanilje er nok, men min niece vil altid have to skefulde ...

naturally means:

• one spoonful of vanilla is enough, but my niece always wants two spoonfuls of vanilla

This kind of omission is very normal in both Danish and English when the missing word is obvious.