Rinse and chop greens and place in a bowl.
Cover greens with salt and massage until they wilt. Continue until the greens have shrunk in size and there is green water in the bowl. Drain the liquid, reserving for later.
Add half the lemon juice and massage again.
In a separate bowl, combine remaining lemon juice and optional oil with a few teaspoons of the reserved liquid.
Press garlic into the juice/oil mixture and stir or shake well.
Pour dressing over greens and toss well, squeezing with hands so that the marinade penetrates the greens.
Allow to sit at room temperature for 15 minutes or longer, preferably in a salad press, or warm in dehydrator at 140°F for up to 60 minutes before serving.