Emily Barton speaks fast, is a mother of nine, and goes by the nickname Sweetz. She’s also the owner of Sweetz Cold Brew Coffee Co., located just north of downtown Gilbert. Barton started making cold brew coffee at home several years ago, after a doctor told her husband to cut out coffee, among other things. Cold brew has 67 percent less acid, so she bought some beans and started experimenting. Soon, her husband was drinking cold brew like it was iced tea, and her residence slowly was becoming a makeshift coffee shop.