I'm a professional baker and my partner is a chef. Here are 10 of our favorite things to buy at Costco

Kirkland Signature has some products we buy on almost every trip. David Silbert I'm a professional baker and my partner is a chef — we both shop at Costco for staples. We often buy Kirkland Signature extra-virgin olive oil and maple syrup in bulk. We've found Costco is also a good place to find…