1. Wash, peel, and finely chop the beet and sweet potato into small cubes; also cut the chicken into baby-friendly pieces.
2. Place the beet, sweet potato, chicken, and navy beans in a steamer basket and steam until all ingredients are very tender (approximately 25-30 minutes).
3. Allow the steamed ingredients to cool to a safe temperature for your baby.
4. Transfer all ingredients to a blender and blend until a smooth, consistent puree is achieved, using some of the natural cooking liquid if needed to adjust the texture.

Summary:

Storing Options: Refrigerate any unused puree in an airtight container for up to 24 hours, or freeze in small portions for later use.

Potential Allergies: Introduce each ingredient gradually and monitor for any allergic reactions, especially with chicken and beans.

Side Effects: As with any new food, introduce slowly to ensure your baby tolerates the meal well.