while julie was here, i dyed eggs using natural dyes, something i'd never done before. a reasonable thing to do would be to try three or four colors, so i decided on ten.
along with the several cups of vegetables or a few tablespoons of spices, i added 1-2 T vinegar along with 1/4 tsp alum per cup of water. i'm sure the vinegar helped, and while the alum didn't always make a difference, in the cases where it helped, it was key. for example, red cabbage dyed the eggs a barely-preceptible faint pink, but after adding the alum, the water instantly turned deep bluish-purple, and the eggs took a lot of color very quickly. basically, i brought to a boil then simmered each pot for 15 minutes, then dyed and hard-boiled the eggs at the same time by simmering for 15+ minutes. if i thought the egg could use more color, i switched to the "cold" method, and let it soak in strained dye in a glass for a good long while. (i have no intention of eating the eggs, so i didn't worry that they became overcooked, took on weird flavors, or sat out of the fridge in dyes for a long time.)
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the best dye of all was onion skins -- i used yellow and red onions, and to get a good number of skins, i rifled through the bins of onions at HEB collecting skins -- while eva patiently looked on -- to go with my modest onion purchase. (this didn't phase the cashier at all, causing me to wonder what sorts of things stranger than bags of onion skins they see in a day?) yellow onion skins resulted in beautiful eggs a bright golden yellow color (almost indistinguishible from the tumeric eggs, actually). an egg directly wrapped in yellow onion skins came out yellow with rust colored patches. red onion skins created some deep olive green eggs, one left in too long was nearly black (with a white flower). one egg wrapped tightly with red onion skins came out pink and a paler shade of olive green. nice.
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onions and red cabbage were the best, but i also had success with beets (brick red, but only after soaking for several hours -- before that, a displeasing brown, alum or not), tumeric (very similar to yellow onions but less dappled and more likely to stain everything), and hibiscus tea. i expected the tea to result in purple or blue eggs, but instead got a sage green, both with and without alum, but darker with). very unexpected. i also had a few disappointments -- spinach barely colored the eggs at all -- even after i tossed in some fennel fronds for good measure, and cumin created not an orange-brown, but just plain brown -- even after i added some cinnamon just in case. coffee also did little but lightly stain the egg. however, imagine the confusing smell at this point: tumeric, cumin, cinnamon, fennel, onions, coffee, and cabbage... yum! (??)
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