Many Cajuns also add garlic and parsley too.
You can’t hardly cook anything Cajun without the Holy Trinity. It is a basic ingredient to just about every Cajun dish. Cajuns don’t say, “Add onion, bell pepper and celery”… They say, “Add a cup of “the trinity”.
The amount of onions is not as much as the classic French Mirepoix, but in Cajun preparations typically it is an equal portion of each ingredient in a 1:1:1 ratio. Just like the ole saying “First you start with a roux….” the same is true with the Holy Trinity, most Cajun preparations use a trio of onions, celery and green bell peppers as the base vegetable seasoning aromatic ingredient. The Cajun Holy Trinity can be found in recipes for most gumbos, etouffees, jambalaya’s, sauce piquants, shrimp stews, crab soup, oyster artichoke soup, red beans and rice, and the list goes on.
In A Truck recipes are true Cajun handed down through the generations - and of course includes the Holy Trinity of Cajun Cooking. There is simply no other way, no substitution for the Holy Trinity.
Can you smell it?