They're also the perfect garnish for a dirty martini. Usually, though, you've got a choice between green and black olives at the store, so what makes them different? Even though there are ...

“Black olives contain more iron than green olives, which is useful for women with a tendency to anemia or chronic fatigue,” she says, adding that 100 grams of black olives (about 20-30 olives) contain ...

However, the difference between green and purple or black olives comes down to ripeness. “All olives start out green and will turn black over time,” says Largeman-Roth. Depending how ripe the ...

The most common olives in the U.S. are green and black, though Kalamata olives are also popular. They are often sliced or used whole in recipes or pressed into olive oil, which is also a major ...