My cousin V, who was in Japan at the exact time as me and Sweetie, succeeded where I had failed . . . in finding one of the most curious of food items . . . shoyu powder. I had heard about it from Kat's blog Adventures in Japan here. Hers was actually a soy salt. V, discovered the powder here in the RocketNews24 site. I feel so fortunate that V bought a bag of the powder for me. It came with a pretty red pouch.
They were in packets.
A little goes a long way. It made my Waimana boiled egg taste even more delicious! Thank you so much, V!!
She said that she found the powder at the Kyoto JR Isetan store.