Peel and chop the kiwis. Wash, clean, quarter and finely dice the radishes. Set something aside for garnishing. Wash the radish leaves thoroughly and drain well in a sieve. Wash lemon balm, shake dry, pluck leaves and chop, except for 2 leaves for garnishing.
Place kiwi, radish, radish leaves, lemon juice, orange juice and mineral water in a blender/blender and mix.
Fill smoothie into jars. Garnish with remaining radish cubes and lemon balm leaves.