Learn Dutch: Je moet alle stukken deeg na het rijzen uitrollen. - You have to roll out all the pieces of dough after rising.

In Dutch, alle means 'all' (every single one of a group), while heel or hele means 'whole' or 'entire'. Since you need to roll out every piece in the batch, you use alle. If you used hele stukken deeg, it would mean 'entire pieces of dough' (emphasizing that the pieces are not broken or partial) rather than 'all the pieces'.

Why is there no translation for 'of' between stukken and deeg?

Dutch routinely drops the preposition van (of) when expressing a quantity, container, or piece of a substance. Just like you would say een glas water (a glass of water), you simply say stukken deeg (pieces of dough).

Why is the verb rijzen (to rise) preceded by het?

Here, the verb rijzen is turned into a noun to mean 'the rising' (a process often called nominalization). When you use an infinitive verb as a noun in Dutch, it always takes the neuter definite article het.

Uitrollen is a separable verb. Why are the two parts written together at the end of the sentence?