In a large pot, combine split peas and broth. Bring to a boil.
Add onion, carrots, celery, ham hock, and garlic. Reduce heat and simmer.
Cook for 1.5-2 hours, stirring occasionally, until peas are tender and soup thickens.
Remove ham hock, shred meat, and return it to the pot. Adjust seasoning with salt and pepper.
Serve warm with croutons or garnish of choice.