1 pound of fresh spinach
leaves will cook down to about 1 cup cooked spinach. for a side dish of cooked spinach,
figure 8 ounces raw spinach per serving.
The easiest way to wash spinach is to put it into a sink or large container of cold water. Remove stems by twisting or cutting spinach leaves off just above stem line and immerse in water. Swish leaves around, then let them stand for a few minutes while dirt sinks to the bottom.
Thoroughly dry by using a salad spinner (my favorite way) or by blotting with paper towels. Wrap in dry paper towels and seal in a plastic bag for storage.