Boil or steam the cauliflower and garlic 12 minutes until very soft. Drain.
Everything into a blender with the fortified nutritional yeast. Blend until completely smooth, 60 seconds or more. Add milk to loosen if it's too thick.
Taste. It'll want more salt and more lemon than you expect.
Serve over whole-wheat pasta with roasted broccoli, or over the roasted vegetable tray, or on a baked potato.
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