About Proper Beverage Company. Proper Beverage Company began in 2018 with the purchase of Proper Soda Co., rooted in a belief that quality and people should always come first. What started with one machine and a lot of determination quickly evolved into a passion for co-packing, as we recognized the need for a partner who truly supported small to mid-size and startup brands. In 2019, we fully shifted our focus to co-packing and became the Proper ...