Ben claims: 6 months in the past Of course. You may add eggs while you collect them. Add additional juice if necessary. I use a sharpie and publish the day on the lid or with a sticker around the jar. Darleen Degner states: 3 many years ago I tried this https://trevorrnidx.liberty-blog.com/29791363/getting-my-clean-eggs-before-storing-to-work