"Create a slow cooker Coffee & Bourbon Brisket recipe based on these instructions, but make it safe and suitable for the user profile: omit gluten, dairy, nuts, shellfish, and corn; keep it beginner-friendly, quick/easy where possible, minimal processing, low inflammation, and use imperial units. Include the brisket, onion, peach, nectarine, ginger, coffee, dark brown sugar, bourbon, molasses, apple cider vinegar, Worcestershire sauce, ketchup, garlic powder, black pepper, and cornstarch only if they can be made allergy-safe (otherwise substitute with safe alternatives). Household size is 3, so scale appropriately. Keep the recipe clear and practical."