Apples are high in fiber, particularly a type of soluble fiber called pectin. Pectin acts as a prebiotic, essential for a healthy immune system. Apples also contain vitamin C and various antioxidants that help strengthen the immune response by reducing inflammation in the body. Plus, they’re...
Substitute: Pectin, agar What Is Gelatin? Gelatin comes from the collagen found in the bones, connective tissue, and skin of pigs, cattle, and other animals. Collagen may also be derived from fish bones. Boiling the bones extracts the protein, which "sets up," or partially solidifies, as...