Wade Blocker on wed 1 nov 00
Umber is a glaze colorant. Just add 1 or more percent to a glaze to
color it brown.
Re the wood ash. Sift it outdoors with any fine sieve. Store it dry
until you are ready to use it in a recipe. If you wish to wash it, mix it
with water, let it settle, pour the water off and dry the remains. Be sure
to wear gloves since the mixture will be very caustic.
Mia in ABQ