portion
noun [ C ]
uk/ˈpɔːʃən/ usa part or share of something larger:
A large portion of the company's profits is ploughed back into new projects.
These products account for a relatively small portion of sales.
COMMERCE
the amount of a particular food that is enough for one person, especially in a restaurant, etc.:
Bar food, lunchtime and evening, comes in generous portions.
They kept their costs down by minimizing waste and having strict portion control.