I would think that with all the salt in soy sauce it would still be ok to use..

It does dye things dark brown, but you’d prolly need a whole lot to color anything of use. I do like the bottles though, you can refill it with other cooking stuff like oil so that you have an easy to control container.

I would think you could use it to clean some copper pots, along w/ some lemon juice to make them sparkle.

Hi,

If it is a nice bottle you could turn the bottle into a flower vase?

I agree with the above that it’s probally safe to eat.

Just use it. If it is proper soy sauce without loads of additives, then it will keep for years. In fact it often improves in taste. I have some tamari which is approaching 20 years old. A drop here or there is a revelatory experience.

well, you could always clean it well, then stick a couple sprigs of fresh rosemary and fill it with olive oil. leave it somewhere that you will remember to shake it every day for a couple of weeks (give or take, depending on how strong you want it) and…voila! rosemary-infused oil for cooking or dipping bread or dry skin!

I use it to antique paper and fired clay in my art projects. It works beautifully…and yes it does get better with age. I’ve got a bottle 15 years old…amazing stuff.