This strawberry frozen yogurt recipe is to be made in an ice cream maker.
Add 1/2 cup strawberries to a food processor or using a hand held processor, to create a puree.
Place strawberry puree into the top of a fine mesh sieve and press the juice through into a bowl.
Press until there are only seeds in the top of the sieve and discard the seeds.
Set strawberry juice aside.
In a medium bowl combine yogurt, sugar, strawberry juice, vanilla and salt, and whisk until smooth.
Chop remaining 1 cup of strawberries into very fine pieces and mix in.
Freeze yogurt mixture in a 2 quart ice cream maker according the ice cream maker instructions.
Transfer to an airtight container and freeze for 2-4 hours.