German phrase
Wie groß soll die Portion für ~ sein?
Meaning
How large should the portion for ___ be?
When to use it
It asks about serving size. Use it when portioning pet food.
Example dialogue
Ich füttere heute den Hund. Wie groß soll die Portion für den Hund sein?
I'm feeding the dog today. How large should the portion for the dog be?
Eine kleine Schüssel voll reicht.
A small bowlful is enough.