Final answer:
Fries should be golden brown, crispy, and cooked.
Step-by-step explanation:
The fries should sit on the racks or above the oil until they appear golden brown, crispy, and cooked. When frying foods, the color and texture are important indicators of doneness.
A golden brown color indicates that the fries have been cooked long enough for the natural sugars in the potatoes to caramelize, resulting in a crisp and delicious texture. The fries should no longer appear pale or soft, but rather have a crispy exterior and a cooked interior.