Set a large pot of water to boiling.
Cut the florets off of a head of cauliflower and put into the boiling water.
Boil for about 10 minutes or until soft. (just stick a fork in it to test. If it goes in easily...you are golden!)--don't overcook it!
Drain the water off the cauliflower. (make sure to drain well) Leave cauliflower in pot, cover, and let it sit there while you get out the food processor and move on to the next steps.
After 10 minutes, move the cauliflower aside, place 4 tablespoons butter and the garlic into the pan and allow to melt and coming to fragrant, stirring often. optionally, you could do the butter and garlic in another pan while the cauliflower cools--depends on the time you have.
As soon as the garlic is fragrant, take it off the heat and, in batches if needed, add to your food processor, returning to the pan when finished.
Add 1/4 cup of milk, and salt and pepper as desired.