Soak the sunflower seeds for a couple of hours or overnight. You can also boil them for 15 minutes instead of soaking. Drain the soaked or boiled seeds. Add to a blender along with water, soy sauce, salt, paprika powder and curry powder. Blend for a couple of minutes until smooth. Heat up some oil in a pan. Add thinly sliced onions. Cook for a couple of minutes. Add chopped garlic and cook for 30 seconds. Add the blended sauce, stir and let it simmer for a couple of minutes. If you want, you can use the sauce right after blending and skip the cooked onion part. You can serve the same sauce with mashed potatoes, use it in creamy soups or make a divine mac and cheese: