1. Thoroughly wash the chicken, spinach, and sweet potato.
2. Cut the chicken into small pieces and peel and cube the sweet potato.
3. Steam the chicken until fully cooked (about 10 minutes).
4. Steam the spinach and sweet potato until soft (8-10 minutes).
5. Combine the steamed ingredients in a blender and puree until smooth, using the natural juices to adjust the consistency if needed.
6. Allow the puree to cool to a baby-friendly temperature before serving.

Summary:
This baby-friendly pureed meal provides balanced nutrition with protein, vitamins, and carbohydrates, making it an ideal lunch option for babies aged 4-10 months.

Storing Options:
Store any leftover puree in an airtight container in the refrigerator for up to 24 hours, or freeze in portions for up to 1 month.

Potential Allergies:
Ensure the baby has no allergies to poultry before serving. Always consult a pediatrician when introducing new foods.

Side Effects:
This puree is generally gentle on a baby's digestive system; however, monitor for any signs of intolerance during initial servings.