Just wondering if it is possible to store royal icing and if so where, how and for how long? TIA
Royal Icing can be stored on your countertop for a good amount of time. Keep your plastic wrap pressed against the surface to contact with air, and remember to re-beat it before using.
Theresa 
It is best kept at room temp in a tightly covered glass container for a couple of weeks. Do NOT use plastic. And yes, re-beat before using.
What happens with plastic containers? Just for future referrence. I normally use mine within 24 - 36 hours. Or I make a new batch.
I'll also like to know what happens with pkastic, i store mine in plastic with a lid and in the frigde.
Plastic breaths. It is NOT air-tight. Air is RI's enemy 
It also holds grease in the pores - again, grease is RI's enemy. I don't care how good a dishwasher you are or have, it does not come out. (The grease that is.)
I was taught.......yah, I know back in the Victorian era.......never to frig RI.
I have kept it in a glass jar on the kitchen counter for maybe a month but after a week or two it starts to loose it's color and texture - re-beating sometimes would help but many times not.
Plastic breaths. It is NOT air-tight. Air is RI's enemy
It also holds grease in the pores - again, grease is RI's enemy. I don't care how good a dishwasher you are or have, it does not come out. (The grease that is.)I was taught.......yah, I know back in the Victorian era.......never to frig RI.
I have kept it in a glass jar on the kitchen counter for maybe a month but after a week or two it starts to loose it's color and texture - re-beating sometimes would help but many times not.
I currently have a big bowl of RI stored in the fridge in a disposable Ziplock bowl and have kept it in plastic long-term before. Fat on plastic is not a permanent bond and can definitely be broken, thus leaving perfectly fat-free plastic.
No need to be scared of plastic. Glass is ideal, but grease-free plastic works just fine too.
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