Combine the rinsed split peas and vegetable stock in a medium saucepan.
Bring the mixture to a boil over medium-high heat. 2.
Reduce the heat to low, partially cover the pot, and let it simmer.
Stir occasionally until the peas are completely soft and have started to break down, which should take about 45 to 60 minutes. 3.
Once cooked, mash the soup with a potato masher or fork for a rustic texture. For a smoother consistency, use an immersion blender directly in the pot or carefully transfer the soup to a standard blender. 4. Reheat the soup if necessary, adding more stock or water to reach your desired thickness.
Season generously with salt and pepper to taste before serving hot.