Cauliflower Mashed “Potatoes” with Browned Butter

large cauliflower (about 1 1/4 pound or 565 g), core removed, cut into large florets (see How to Cut and Core Cauliflower)

water

salt

 Tbsp butter

 Tbsp (60 ml) sour cream

Chopped chives, green onions, and/or parsley for garnish

Salt and pepper