Cut the garlic in half, put it in foil, add the thick part of the green onion stalk, sprinkle with a tablespoon of olive oil. Wrap loosely to leave room for steam, and bake in a preheated 180 degree oven for 20 minutes.
Peel the potatoes and boil in salted water for 30 minutes after boiling. Then drain the potato broth, but do not pour it out yet.
Put the chopped greens and green onions into the bowl of the blender, squeeze out thave flesh of the baked garlic and baked onions, add olive oil. Add soy sauce. Whisk everything in a blender.