First, wash and clean the leaves of the spinach well.If the spinach leaves are big, then chop them roughly.
Dissolve 1/2 tablespoon corn starch in 1/2 cup milk.Make sure that there are no lumps of flour.
Heat 1/2 tsp butter and 1/2 tsp oil together on medium flame, in a pan.Add chopped garlic and ginger, saute for a few seconds and then add chopped onion.
Saute until onion turns light brown.
Add Spinach, cook until spinach wilts.
Add 1 cup of water, salt and sugar.Stir well and let it boil for 3-4 minutes.Sugar is an optional in the Spinach soup recipe.Sugar is added to retain rich green color of Palak soup.
Now turn off the flame and let the mixture cool for 8-10 minutes.After cooling, make smooth puree in the mixer grinder or using a stick blender (hand blender).Transfer the mixture to the same pan after making the smooth puree.
Add dissolved cornstarch and stir continuously for 2-3 minutes over medium flame.Add black pepper powder.
Now let the mixture cook for 5 minutes.Now you can taste for the seasonings and adjust soup according to your taste.
Your Yummy and healthy Spinach Soup is ready.Serve it hot.