I don't normally make savory muffins. It's not that I have anything against a savory muffin. Some of my favorite muffins are savory! I like nothing better than a cheddar bacon cornmeal muffin with my green tomato chili. I just don't think of savory first when I am preparing to make muffins.
But my mom did.
I'd mixed a cup of shredded beets into my soaked oatmeal muffin base, but was dithering over which direction to go from there. Mom was visiting and suggested horseradish. Conveniently, I had a jar of horseradish powder.