Homemade Cherry Pie Filling

Bahan-bahan (4 porsi)

• ⅓ cup granulated sugar (or more to taste)
• 4 tablespoons cornstarch
• pinch salt
• 1 ⅓ cup water
• 1 tablespoon fresh lemon juice
• 5 cups fresh sweet cherries (pitted)
• 4 drops red food coloring (optional)