Learn Swedish: Grossisten skickar en leverans kaffe idag. - The wholesaler is sending a delivery of coffee today.

In Swedish, when you have a noun describing a measure, quantity, or container followed by the substance it holds, you usually drop the preposition entirely. So "a delivery of coffee" simply becomes en leverans kaffe. You will see this same pattern in common phrases like en kopp kaffe (a cup of coffee) or två kilo äpplen (two kilos of apples).

Could I use the word av and say en leverans av kaffe instead?

You can, and it is grammatically correct, but it usually sounds stiff, overly formal, or like a direct translation from English. Dropping the preposition is the most natural and common way to express this in everyday Swedish.

Why is kaffe in its indefinite form here?

When using this quantity structure, the substance being measured almost always stays in its indefinite form. Even if you were talking about a specific delivery and said den leveransen kaffe (that delivery of coffee), the word kaffe remains indefinite because you are referring to the substance in general rather than a specific batch.

If I wanted to emphasize "today" and put idag at the start of the sentence, how would the word order change?

Swedish is a "verb-second" (V2) language, meaning the verb must remain in the second structural position of the sentence. If you move idag to the front, the subject and verb must swap places so the verb stays second: Idag skickar grossisten en leverans kaffe.