I have a recipe that calls for 20oz of spinach, but I am not sure how many ounces of spinach equals a cup. Would it be 2 1/2 cups?
One source suggests there are 6 cups in a pound of fresh spinach, so 20 ounces would equal 7.5 cups.
to answer your question – 2.67 ounces of spinach equals 1 cup.
2 1/2 cups would be 6.66 ounces of spinach