Freeze Dried Elderberry Juice

I found a bunch of elderberry juice taking up space in the freezer waiting to be turned into elderberry syrup. Let's freeze dry it! 

Putting the filled pans into the freezer was terrifying. Thankfully, I didn't spill! 

Since the past two liquids I freeze dried didn't need the silicone mats, I opted to not use them this time. Mistake! It stuck to the pan pretty bad. I needed to scrape all of it out. On the other hand, it did turn into a powder instantly.

Since the juice will be rehydrated to make syrup, I was careful to weigh each tray beforehand. I weighed it afterwards to find out how much water was taken out, i.e. how much water would need to be added back in. It ended up being about 3c per tray, and conveniently, one tray fit in one pint jar.