"Create a beginner-friendly, quick and easy gluten-free chicken gravy recipe for 3 people. Use minimal processing, moderate budget, and low-inflammation-friendly ingredients where possible. Must be dairy-free, nut-free, shellfish-free, and corn-free. Use imperial units only. Include a simple stovetop method and suggest using chicken drippings or broth if available. Keep it suitable for a household of 3 and ready in about 15-30 minutes."