Blend 1 oz of freeze-dried strawberries in a blender or food processor completely until you get a strawberry powder. Set aside.
Beat butter in a stand mixer (or with a handheld mixer) for 30 seconds until smooth.Add in strawberry powder, vanilla extract and salt. Blend on low until combined.
Slowly add in one cup of powdered sugar at a time and alternate with small amounts of cream until you have used all powdered sugar and cream.
Add in lemon (or lime) juice. Beat on low until everything is combined and you get the consistency you are looking for. NOTE: To thicken up the frosting, add more sugar. To thin it out, add more cream.