I froze blueberries from a UPick farm in Cooperstown NY named INGALLS BLUEBERY HILL. they are organic - more expensive - the berries are plump and the owner is helpful.
we picked for about 3 hours.
It was the middle of August, I think a later harvest than normal. Call 607-547-2600 for info + facebook link - call first for best picking.
They provide buckets to pick lined with bags to take your blueberries home. I brought a plastic tray to lay them in the car - they are fragile. Than I washed and froze them and de-stemmed. I froze in large 2 mil bags that I use for freezer products. They held up very well. I recently made blueberry muffins. Here is the recipe.
2 c cake flour
1 1/2 tsp baking pwder
3/4 tsp salt
mix dry ingredients
1 stick butter
3/4 c sugar or substitute (honey, maple syrup, coconut sugar)
3/4 c sour cream or buttermilk
add dry ingredients and mix
add blueberries to taste - I used alot
the frozen berries help the batter to chill immediately which makes for better baking
Bake at 350 degrees until a tester comes out clean depending on the size of your muffins they take as little as 15-20 minutes to bake. They stay moist and soft for a good amount of time in your frig! Enjoy! https://www.facebook.com/pages/Ingalls-Blueberry-Hill/254264028089345