A 38-year-old Utah mom with 5 children named Nicole Tanner used her life savings to start Swig, a 'dirty soda' chain that sells Sprite, Coke, etc. spiked with fruit purees and creams. She launched Swig in 2010 after selling Mary Kay products, using her savings to buy a 700-square-foot commercial building with a big parking lot for her storefront. She initially priced her drinks at $1 for any size; soon she had lines out the door after a local news segment on Swig aired. By 2017, Swig had…