In a blender add in Chopped English cucumber. Generally, seeds are tender in English cucumber so I prefer keeping them. If you don't prefer you can remove the seeds and add them.
Add in Chopped Cilantro or Coriander leaves. Also add in 3 cloves of Garlic, 2 tbsp of chopped red onion, and 1 green chili. Make sure you remove the seeds and then add the green chili.
Next add in Coconut Milk and Water.
Next add in the required Salt
Blend everything together to a fine puree.
Garnish with Pepper Powder as needed. You may also garnish with Lemon Juice as needed.