Start by preparing all the ingredients for your delicious kale tonic. Take 6 large leaves of kale and wash them thoroughly, then pat them dry using a paper towel. Remember to remove the stems before roughly chopping the leaves into small pieces. Next, peel and seed 1 1/2 English cucumbers, juice 2 fresh lemons, and core 3 fuji apples.

Once all the ingredients are ready, it's time to blend them together. In a high-speed blender, add the chopped kale leaves, peeled and seeded cucumber slices, fresh lemon juice, and cored apple slices. Give it a good mix for 2-3 minutes until all the ingredients are well combined and you get a smooth consistency.

To ensure a perfectly smooth and fiber-free drink, strain the mixture using a fine-mesh strainer into a large pitcher or jar. This step is crucial in achieving the perfect texture and taste for your kale tonic.

Serve your chilled kale tonic in glasses filled with ice, and add a lemon or cucumber slice as garnish if desired.