Choose firm, fully green cucumbers with no yellowing or soft spots. Cucumbers suitable for slicing and eating are 6 to 9 inches long with small, white spines on the surface that rub off easily. Pickling cucumbers are smaller and have black spines on the surface.
Preperation
Wash under cool, running water to remove visible dirt. You may want to remove the seeds in mature cucumbers by cutting lengthwise and scooping seeds from the center with a spoon.
Storage
Store unwashed cucumbers in the refrigerator for up to a week. Sliced cucumbers should be tightly wrapped and refrigerated for up to 3 days.