In a large bowl, combine the fresh or frozen cherries, ½ cup sugar, lemon juice, cornstarch, cinnamon, vanilla extract, almond extract, and salt. Stir until the cherries are coated.
2 lbs (900 g) pitted cherries, ½ cup (100 g) sugar, ¼ cup fresh lemon juice, 3 TBS (21 g) cornstarch, ½ tsp cinnamon, 1 tsp vanilla extract, ¼ tsp almond extract, ½ tsp kosher salt