Chop palak and clean it. Cook for 5-7minutes in a vessel with water, covering it with a lid. Meanwhile, chop onions, garlic cloves, and a piece of ginger. Grind them together, with some water, to form a consistent paste. Strain off water from palak, and grind it to a fine paste. Take oil in a pan with medium flame, let it warm a little, then put the onion, ginger, and garlic paste and fry it till it gets brownish white (from white). Add half teaspoon garam masala, coriander powder, red chilly powder, and pinch of salt and sugar (according to your taste). Stir it as it gets brownish. Then add palak paste to it along with a little water, and stir as it cooks. Pour 2-3 tbsp of fresh curds, about 30-40ml milk, and 2 tbsp cream. Slice panner into small cubes, soak in water for couple of mitutes, and fry it in another pan to light golden brown color in oil. Then add it to palak. Stir for couple of minutes, and turn off the flame. Palak Paneer is ready!