It's not your grey-zone muffins, or even ozone muffins we are worried about. The responsible citizens of this fine nation that I represent are concerned about the anonymous nature of these powerful muffins, whether good or bad. We demand they come forth and identify themselves and their caloric values, lest innocent pastry eaters become obese and incapable of fitting in an airplane coach seat.
If the muffins are bran and provide society with beneficial fiber, then they should have nothing to fear. If however, they are double chocolate fudge muffins, it is our government's responsibility to secure these dangerous baked goods (and possibly sell them to third-world countries for oil drilling rights).
BTW, I'm pretty sure muffins are TL 3. Yeast is the demarcation line for TL 3, right?