Simple Cauliflower soup

This easy and simple soup has WOW'ed some of my friends. 

Super easy, the main ingredient doesn't need too much fuzz here. 

I serve this as an appetizer soup or make it super thick for a puree to act as a

bed for grilled meats or hard vegetables. 

Ingredients

3 tablespoons of olive oil

1 large onion, cubed

1 large head of fresh cauliflower 

sat to taste and some pepper

5 cups of water, divided (or home made chicken stock)

Warm olive oil in a heavy large pot. 

Sweat the onion in the olive oil over low-medium heat without browning.

Add the cauliflower, salt and pepper to taste. Add two cups of water and raise heat, cover the pot and cook for 15 minutes or until tender. 

Add the last three cups of water and bring to a low simmer and cook uncovered for 20 minutes.

Working in batches, puree the soup in a blender until smooth and creamy. 

Reheat soup to thicken a little and serve hot (I drizzle a thin bit of olive oil and fresh pepper on top).