RE: Martha Stewart Silk Tie Egg Dying, does the pot have to be ceramic or gl because of the vinegar used?

The directions: a href="http://www.marthastewart.com/portal/site/mslo/menuitem.3a0656639de62ad593598e10d373a0a0/?vgnextoid=955500e62abd0110VgnVCM1000003d370a0aRCRD&autonomy_kw=silk%20tie%20egg&rsc=ns2006_m1" rel="nofollow"http://www.marthastewart.com/portal/site…/a specify a gl or enamel pot because metals react with the dye. Even if the acid is only vinegar, the chemical reaction can ruin the colors. You could probably use a stainless steel pot, but why take the risk? Better safe than sorry.