Kirkland Signature, the in-house Costco brand you'll see all over its warehouse-sized stores, sells a wide variety of goods, from Kirkland Signature maple syrup to Kirkland Signature spiced rum.

The Kirkland Signature Greek Yogurt costs $6.79 for a 48 ounce ... Because it is just plain yogurt, it can be used to make sweet or savory foods. I have used it in baking and smoothies, but ...