Shred cauliflower with a food processor, or go old-school and use a cheese grater like I did this time (it takes longer, I often shred my knuckles, and makes a bigger mess, but sometimes I just don't want to pull out the food processor, you know?).Put riced cauliflower into a large pot and cover with water.Bring to a boil and cook for 4-6 minutes.Remove from heat, strain water, and mix in remaining ingredients.Add salt if desired.