Americans are paying less for gas than they were a year ago. Furniture, ... Spanish olive oil production fell by a half — from an estimated 1.3 million to 610,000 metric tons — over the past year.

Olive oil is just as expensive as gas. Featured Video User @imthejay said she went to Walmart in December, where she noted that a 101 fl. oz. bottle of Great Value olive oil cost more than $37.

A byproduct of olive oil production, pits account for between 8 and 10% of a ton of processed olives. On average, Spain produces around 400,000 tons of olive pits a year, Avebiom's Pablo Rodero said.

Olive oil is best used within 12 to 18 months of production. When you purchase your bottles, check harvest dates or best-by dates to ensure you’re getting the freshest oil possible.

From extra virgin olive oil to others, here's our list. There's a science to it — and we outlined all the details: the best brands, what to look for and how to use them.