Fresh juices, snacks, smoothies and more. It's amazing something so healthy can taste so good! Boost Juice Bars is an international chain of retail outlets that specialize in selling fruit juice. Boost Juice Bars was formed in 2000 with the first store located in Adelaide, South Australia. Interesting facts about Boost Juice: We sell over 1 million juices and smoothies every month. We go through more than 35 tones of mangoes each year. At one stage we ran Adelaide out of bananas! Janine developed most of the recipes herself, with the help of her three children.