Combine 3/4 cup wine and sugar in a small saucepan; bring to a boil over medium-high heat. Cook until reduced to 1/3 cup (about 4 minutes). Remove from heat. Place wine mixture, vanilla, and half of strawberries in a blender or food processor; process until smooth. Spoon pureed strawberry mixture into a large bowl.
Coarsely chop remaining strawberries. Add chopped strawberries, 1 tablespoon wine, and lemon juice to pureed strawberry mixture; stir to combine.