Supermarkets are improving the image of their store brands with better packaging and more distinctive offerings. But where exactly do these products come from?

It’s a question a growing number of people may have as retailers increasingly develop their store brands as a way to cultivate loyalty among shoppers.

Safeway, for example, offers versions of Doritos, Cheetos and other salty snacks. But rather than merely imitating the look of their big-name counterparts, the “Snack Artist” line comes in distinctive, earth-tone bags made to look more like a premium brand. The Safeway logo appears only a small strip at the bottom.