SC - Indigo/Woad

[Elise Fleming]

Greetings!  Irissa wrote:

>I just found out from our local State Master Gardener that yes, woad 
>is edible. It tastes like the outer leaves of broccoli, very bitter.
>However, it cannot be used to make food blue though.  The process that
>makes the blue dye causes it to become toxic. Also some states 
>classify woad as a noxious weed (hence - illegal to grow it.) 

What is the relationship between indigo and woad?  Does indigo come 
from woad?  Can it come from anything else?  Indigo has been used to 
color confections... (Found a recipe in a new book I just got.)  How is 
indigo "made"?

Alys Katharine

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