Black seedless grapes are small to medium in size and are round to slightly oval in shape.
Their skin is deep purple to nearly black. Black seedless grapes contain significant amounts of vitamins A, C, and K.
Flavonoids within the grape’s skin, such as resveratrol, also provide antioxidant qualities which some people believe help reduce the risk of cardiovascular disease.
Your refrigerator is the best place to keep fresh grapes. They thrive at about 30-32 degrees Fahrenheit with 90-95% humidity, so go ahead and throw them in the back of your crisper drawer (it's usually the coldest place in the fridge).