Place the bones on a baking sheet and roast in a preheated oven for 45-50 minutes.
Cool and refrigerate until ready to use.
Place the roasted bones in a slow cooker.
Add the water, carrots, celery, shallots, bay leaves, jalapeno, apple cider vinegar, salt and pepper.
Cover and cook on low for 6-8 hours, or high for 4 hours.
Remove the bones from the cooker. Save for another use or discard.
Use a large slotted spoon to remove the aromatics from the cooker.
Use the ladle and strainer to strain the broth into a large 4 quart container.
Serve immediately, or refrigerate until ready to drink.
Notes
I like to add a splash or two of hot sauce to mine before drinking. If you like a hotter (spicier) broth, leave the seeds in the jalapeno instead of removing. If refrigerated, microwave the broth before serving. Bone broth will keep in the refrigerator for up to 7 days.