Place the rinsed split peas into the base of the slow cooker.
Add the ham hock, chopped carrots, celery and brown onion.
Pour the vegetable liquid stock over the top of the hock and vegetables.
Allow to cook for 8 hours on low or 6 hours on high.
Remove the ham hock, cut off the fat and discard (along with the bone). Chop the meat roughly and set aside while you puree the soup using a stick blender (optional - see notes). Return the meat to the slow cooker and serve.
Notes
RECIPES NOTES & TIPS
Blending the soup gives it that classic thick, creamy texture, but it’s completely optional.
Always remove the ham hock before blending to avoid hitting the bone.
If using a stick blender, blend slowly to prevent hot splashes.
For food processors or Thermomix, blend in batches once slightly cooled.
If the soup thickens too much, stir through a little extra hot stock or water.
Store leftovers in an airtight container in the fridge for up to 3 days.
Freeze cooled soup in airtight containers for up to 3 months.
Defrost overnight in the fridge and reheat gently on the stovetop or in the microwave.