Memory Jars By Vera Brosgol
A young girl finds a clever way to keep her favorite things - and people - close to her forever in Memory Jars, from Caldecott Honoree Vera Brosgol.
Freda is devastated when she can't eat all the delicious blueberries she's picked. She has to wait a whole year before they're back, and she doesn't want to lose them! Then Gran reminds her that they can save blueberries in a jar, as jam. So Freda begins to save all her favorite things. But it turns out that saving everything also means she can't enjoy anything, and Freda realizes that some things are best saved as memories.
Upset that she can't eat every bucketful of blueberries she picked with her gran all in the same afternoon ("they were the best right then and they'd never be any better"), a lovably quirky girl takes "preserving" to a whole new level. Add Brosgol's signature big-eyed characters, a touch of dark humor and a mouthwatering jam recipe, and you've got all the ingredients for a sequel." - The New York Times