Learn Dutch: Wij vullen de portie en gieten de rest. - We fill the portion and pour the rest.

Yes! Just like in English, de rest refers to the remainder of whatever you are dividing. While it is not a mathematical fraction like een kwart (a quarter) or de helft (half), it is essential vocabulary for talking about parts of a whole.

What is the difference between gieten and schenken? Do they both mean 'to pour'?

Schenken is typically used when you pour a drink for someone to consume, like a glass of wine or a cup of tea. Gieten is a more general, physical action. It often implies pouring a larger volume, emptying a container, or cooking tasks like pouring batter into a mold or draining pasta.

Why is there no subject after en? Shouldn't it be 'en wij gieten'?

Because the subject wij applies to both actions, you do not need to repeat it after the conjunction en (and). The sentence structure is Wij vullen... en [wij] gieten... This works exactly the same way it does in English.

What is the gender of portie and rest, and how do we make them plural?

Both are de words: de portie and de rest. The plural of portie is porties. The word rest is generally treated as uncountable when it means 'the remainder', but if you are talking about literal leftovers from a meal, you will often see the diminutive plural restjes (small leftovers).