Place a steamer insert into a saucepan, and fill with water to just below the bottom of the steamer. Cover, and bring the water to a boil over high heat. Add the kale, recover, and steam until just tender, 7 to 10 minutes depending on thickness.
Whisk together the lemon juice, olive oil, garlic, soy sauce, salt, and black pepper in a large bowl. Toss steamed kale into dressing until well coated.
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