Looking for a Blue Ingredient Blue food is notoriously hard to find, but I'm working on a dish that basically resembles a lighthouse, and I need something blue to act as the water. Mustn't be wet. The dish is sort of breakfasty (egg, bacon, mushroom &amp; so on). Any ideas? I've heard you can make cabbage turn blue, but I don't know how. If I can't get blue I might have to go with green (in the form of some micro-herbs.)

Any suggestions for something that would fit?
Blue potatoes dry enough?  Those could certainly fit with breakfast. (hash browns, home fries, etc)  Blue corn may also work in a corn pancake.