Thoroughly rinse and drain, then spread about 1/4" thick on dehydrator trays (you may need a liner if the holes are very big). *
*It is possible to use one's oven and oven trays to do the drying.
Spread your berries on baking trays and set the oven to the lowest temperature (preferably below 200 degrees Fahrenheit).
Leave the door cracked; turn and check the berries frequently.
How To Sprout Grains https://traditionalcookingschool.com/food-preparation/recipes/sprouting-grains-for-bread/