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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 & 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?

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1  
Perhaps look into some edible flowers? –  ElendilTheTall Jun 21 '11 at 13:52
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You may find Are there no naturally blue foods? from Skeptic.SE helpful. –  dmckee Jun 21 '11 at 20:56
    
If you choose a blue food colored by anthocyanines (practically all the "blue" plants named until now), it will have a purplish hue, rather than a greenish one. Many anthocyanines will get bluer in a high pH environment, so you can try if that helps - just be careful not to make your dish taste soapy. I'd personally go with food coloring, just because I've never seen a blueberry-colored sea. –  rumtscho Jun 21 '11 at 22:36
    
Thanks for all the suggestions. –  Bruce Jun 23 '11 at 6:32
    
@Bruce: what did you do? :) –  Mien Jul 9 '11 at 11:21

4 Answers 4

up vote 14 down vote accepted

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

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5  
Blue Corn Chips would work too. A Mexican Breakfast sort of a thing. –  yossarian Jun 21 '11 at 18:16
    
Maybe blue corn bread? –  Paul Cline Jul 8 '11 at 23:24

By "mustn't be wet", do you mean anything but an actual liquid? Would Blue Jello work? It's solid enough to stay in one place (unless you turn it upside down).

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All the blue(ish) food I can recall:

  • A lot of candies
  • Grapes
  • The outside of passion fruit (you can replicate waves)
  • Blueberries
  • Elderberries
  • Ice cream
  • Blue potatoes
  • Red cabbage (I've read that it would turn blue if you don't add apples/acid)
  • Violets
  • Blue yoghurt
  • Eggplant (maybe)

However, I'm not sure what of these would fit with breakfast. I think the best one is the yogurt. You can also try to make blueberry bavarois, but I'm afraid that would be a bit too purply.

You can always buy some blue food colouring and you can mix it with whatever you want.

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I don't think Blue Curaçao would be appropriate, so I left that out. –  Mien Jun 21 '11 at 16:55
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When if comes to alcohol with breakfast, it must be noon SOMEWHERE. –  BobMcGee Jun 21 '11 at 18:27
    
Mien - Blue Curacao is always appropriate! –  Brendan Long Jun 21 '11 at 19:04

I would take 3 parts elderberry, 1 part water and heat it to boiling with a small amount of agar. Once cold you have blue to darkblue, slightly purple jelly. If you take a bit more agar it gets solid enough to be cut. It would still look like a liquid. It is not really sweet, so it would go well with your breakfast dish.

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