Chop broccoli into big florets and soak it in salted water for sometime to remove insects. Now wash it with clean water properly.

Heat butter in a pot and add sliced onion to it. Add chopped garlic and saute it until onions are translucent. Now add flour to it and cook for a minute on medium heat. Now add broccoli florets along with vegetable stock or water to it and give it a good mix.

Cook it for 10 to 12 minutes until broccoli is cooked. Now let it become warm at room temperature then grind it in a mixer jar or with a hand blender to make it smooth.

Now put the pot on medium heat and add salt, pepper and warm milk to it. Let it simmer for 5 to 7 minutes on medium heat. Now add fresh cream and lemon juice. Adjust the the seasoning according to your taste. Cook it for couple of minutes and turn off the heat.