Preheat oven to 400 degrees F & line a baking sheet with parchment paper
Combine flour, milk, and water. Either individually or several at a time, coat cauliflower florets in flour mixture. Spread evenly across baking sheet.
Bake for 30-32 minutes, or until golden brown. Broil for 1-3 minutes if you want them extra crispy.
While in oven, combine all ingredients for the sauce.
Let cauliflower cool for a few minutes, coat with sauce & top with green onions and sesame seeds