If you have a juicer, run your vegetables, apples and ginger through it. Add the lemon juice (and cider if you’re using it) to your glass and stir.
If you don’t have a juicer (or yours is broken like ours turned out to be!), blend the carrots, beets, kale, and apples in a blender or food processor. Grate the ginger into the batch, and blend again. Over a large bowl, squeeze the pulp through a colander with a spatula. Add the lemon juice (and cider).