Cajun White Beans with Andouille

package of dried white beans (Great Northern or Navy)

canola oil

mild andouille or other spicy smoked sausage

slices of bacon , chopped

medium onion , chopped

a bell pepper , chopped

stalk of celery , chopped

garlic , minced

green onions , sliced

Palmful of dried parsley

Cajun seasoning (like  Slap Ya Mama ), or to taste

Kosher salt and fresh cracked black pepper ,

Hot sauce , for the table