This Strawberry Jam Macaron Filling recipe creates a sweet, tangy, and perfectly textured jam ideal for filling delicate macarons. Made with fresh or frozen strawberries, sugar, apple juice, and lemon juice, the jam is cooked to a thick consistency and cooled to enhance its flavor. The filling pairs beautifully inside a ring of buttercream or ganache, resulting in a delightful, fruity macaron treat that matures and softens in the refrigerator.