From The Herb Society of America: This is a wonderfully delicious and fragrant muffin; it is sweet like cake. The addition of blue corn is fun and tasty – gives a bit of added texture and the corn is sweet. If you aren't familiar with blue cornmeal, try it and you will find its earthy taste is good in cornbread, muffins, and blue corn pancakes. You can use yellow or white cornmeal if you don't have the blue. Use a combination of lemon and cinnamon basil for the fragrance and flavor; the citrus and the spice go well with the blueberries. However, if you don't have both basils, either one can be used on its own and still make a tasty muffin.