Cut up your veges and fruit into small pieces/sticks.
Feed the orange, ginger and finally the carrots into your slow juicer, then add the water to wash the remaining juice out.
Stir through the gubinge powder after juicing.
Add some ice and drink straight away, or put half into a jar, seal the lid and save in the fridge til your other half gets home (or you get thirsty again).
Notes
Camu camu powder, as another Vitamin C rich superfood, works great as a substitute for the gubinge powder.
If you're jarring half for later, try to use the smallest jar that fits so there's not much air between the juice and the lid. That way you'll limit the amount of oxidation that takes place.