If you're using an ice cream maker, put the freezer bowl into the freezer 1 day before making this sorbet.
If you're using fresh strawberries, you need to rinse, dry, and hull them. Then cut the strawberries in half. Frozen strawberries can be used as is.
Add the strawberries, sugar, and lemon juice to a blender or food processor. Cover and blend until smooth.
Pour the mixture into the bowl of your ice cream maker. (see note) Churn the sorbet for 20 minutes or the churn time in the directions for your machine. It should have a soft consistency.
Scoop the sorbet into a freezer-safe glass dish and freeze for 1-2 hours before serving.
Notes
If you don't have an ice cream maker, pour the strawberry mixture right into a freezer-safe container and freeze it for 5 hours to overnight.
If the sorbet becomes hard to scoop in the freezer, let it sit out for a few minutes before serving.