Dietitians Spilled Their Favorite Costco Foods and Basically Rewrote My Grocery List

"I cook with it and use it for salad dressings. It's great to buy in bulk because it lasts longer and I use it so much. Costco has plenty of brands to choose from, but the Kirkland brand is generally cheaper and just as good as the others. Olive oil is also a great healthy fat to have in your diet." — Shana Spence, MS, CDN, RDN, in New York

"My favorite place to purchase olive oil is Costco. It is usually about half the price per ounce than other places but is packed with the same healthy fats and great taste as more expensive options." — Elizabeth Kehoe, RD