KASHRUT AUTHORITY OF WESTERN AUSTRALIA (KAWA)
KAWA ANNOUNCEMENT - BOOST JUICE BARS
"The following has been issued by the KA in Sydney, KAWA advises that this applies to Perth as well.
KA advises that it is permissible to purchase blended juice or pure fruit smoothies at Boost Juice stores. Kosher consumers must request only 100% fruit (with ice) to be blended into a juice or smoothie. Consumers must also be sure that the blender is clean and washed before use. Please note it is an appropriate "chumra" not to use lemon, lime or ginger as these are sharp but it is not obligatory. No other ingredients may be used (e.g. frozen yoghurt, sorbet, boosters) as they are not acceptable."