Start by cutting 350 grams of cauliflower into ¼-inch dice.
Place the cauliflower in a large pan, cover with 240 ml of half-and-half, and bring to a boil. Then, reduce to a low simmer and cook until tender, about 25 minutes.
Once the cauliflower is tender, separate the cauliflower from the cooking liquid.
Add the cauliflower to the blender, and while blending, add the cooking liquid a little at a time until the puree is smooth but not loose.You should use around 60 ml of the cooking liquid.
Brown 35 grams of butter, then pour into a bowl to stop the cooking process.
Add the brown butter and 5 grams of salt to the puree while blending.
Pass the puree into a bowl, then place it over ice while stirring to cool quickly.
This will prevent a film from forming.