the answer is 8 oz per serving.
About 4 ounces (1/2 cup) is standard for vegetable serving size.
One US gallon is 128 fluid ounces.
I have heard a serving is 2 ounces on average.
Brocolli Rce casserole
In a full entree, 4 ounces of each veg and 6 ounces meat or fish.
I would give about 8 ounces in a serving of jambalaya
1.5 ounces
1 US cup = 3.53 ( 3 1/2 ) ounces
4 oz in a serving of guacamole.
A serving of wine is typically five ounces.
I use 4 oz as a serving.
4 ounces is a normal portion.