Add strawberries, sugar and salt to food processor and pulse until most of strawberries are pulverized into a powder and ingredients are combined.
Add oil and kernels to a large pot (6 quarts or more) and cover with tight fitting lid (or use popcorn maker and follow instructions).
Turn heat to medium and begin to slide and shake the pot back and forth over the burner until the kernels will begin to pop (after about 2 minutes).
Keep sliding/shaking pot until popping begins to slow down then remove from heat.
Wait until popcorn has stopped popping before removing lid.
Transfer popcorn to bowl.
Spoon strawberry powder into a sifter and sprinkle on top of popcorn.