St. Patrick’s Day has passed. If your liver is still functional (meaning you didn’t down too many Salty Dogs) and you're curious why the grapefruit juice in one might finish the job, here’s a cool ...

But, if you're trying to keep it simple, use a bottled grapefruit juice, the drinks will still be delicious. Then you’ll need ...

Because it’s free from additives, fresh grapefruit juice will always be superior to bottled juice. However, if fresh grapefruit juice is unavailable, you can use store-bought grapefruit juice.