Rinse the dried navy beans under cool water to remove any dirt and debris.

Place the beans in a large pot, cover with 3 cups of water, and soak overnight.

Preheat your oven to 300°F (150°C) for a low and slow bake.

Drain and rinse the soaked beans to reduce gas-producing compounds.

Combine the beans, molasses, brown sugar, Dijon mustard, salt, pepper, chopped onion, and Worcestershire sauce in the Dutch oven.

Top the bean mixture with salt pork or diced bacon so the fat renders into the beans.

Add enough water to just cover the beans to ensure even cooking.

Cover the pot and bake at 300°F (150°C) for about 6 hours, stirring occasionally and adding water if the beans become dry.