Final answer:
The size of the scoop used for mashed potatoes portions is typically referred to as a portion scoop, with the most common size being the #8 scoop which holds approximately 4 oz or 1/2 cup of mashed potatoes.
Step-by-step explanation:
In cooking, the size of the scoop used for mashed potato portions is typically referred to as a portion scoop. The most commonly used size for mashed potatoes is the #8 scoop, which holds approximately 4 oz or 1/2 cup of mashed potatoes. However, scoop sizes may vary depending on personal preference or specific recipe requirements.