Grandma's Caramel Popcorn Balls

Ingredients (6)

• + 8 quarts popped popcorn add to pantry
• + 2 cups evaporated milk add to pantry
• ✓ 2 cups white sugar
• + 1 cup dark corn syrup (such as Karo®) add to pantry
• ✓ 1 cup margarine
• + ⅛ teaspoon salt add to pantry