I swear by Costco's food selection. Alyse WhitneyI'm a cookbook author and recipe developer who loves grocery shopping at Costco. I use my executive membership to buy staple ingredients, sauces, and more. I've also found great deals on hummus, cheese, kimchi, and scallion noodles. When…This story appeared on businessinsider.com , 2026-08-12 15:49:01.