Add garlic, salt and pepper to the ham mixture. Stir and let cook for 2-3 minutes until garlic is softened and fragrant, but do not let it brown. Add remaining seasonings and stir well to combine. Add black beans and turn heat to low. Stir to combine ingredients well, then cover and let simmer on low for about 10 minutes. Stir from time to time. If it is sticking to the bottom or getting dry, you can add more chicken stock.