Warm, thick corn-based drink flavored with fresh guava is a comforting Mexican beverage. This family-friendly, vegetarian drink is a fresh, fruity way to warm up on chilly days.
Wash and quarter the guavas, removing ends but leaving seeds in. In a saucepan over medium heat, combine guavas and 2 cups water.
Simmer guavas gently for 10 minutes, until very soft and fragrant. Let cool slightly, then transfer to a blender and blend until smooth.
Strain blended guava mixture through a fine sieve into a large saucepan to remove seeds and pulp. Stir in the sugar and ground cinnamon.
Separately, whisk the masa harina with 1 cup of cold milk until smooth and free of lumps. Gradually add the remaining 2 cups of milk and whisk again.
Pour the masa-milk mixture into the saucepan with the guava liquid over medium-low heat. Stir constantly with a wooden spoon or whisk, scraping the bottom to prevent sticking. Cook until thickened, about 10-12 minutes. Off heat, stir in vanilla extract and salt. Serve hot.