Using a sharp knife (or corn on the cob peeler), cut the corn off the cob. Once kernels are removed, run the back of your knife down the husk to remove the bottom parts of the corn. Set aside.
In a large pot, heat oil and butter over medium heat. Saute onion, smoked sausage, and potatoes for about 7 minutes or until the onions start to become tender and everything starts to sweat a little.
Sprinkle flour over top and stir to coat. Cook 2 minutes. Add chicken stock, salt, pepper and bay leaves.
Stir and bring to a boil to thicken. Then reduce heat to low, cover and simmer gently for 10-12 minutes or until the potatoes have cooked through.
Remove from heat and add in heavy cream and fresh corn kernels. Garnish with fresh chives and oyster crackers (if desired) and serve hot.