Place the hot water in the stainless steel liner of a 6 quart electric pressure cooker along with the garlic cloves and cauliflower. Put the lid on and close the valve, set the timer for 1 minute and use quick release. When the pressure comes down remove the lid and carefully transfer the water, cauliflower and garlic to a high powered blender container, add the rest of the ingredients except for the red pepper flakes. Process until smooth and creamy about 1 minute. Stir in the red pepper flakes.