The Holy Trinity of Deep South Cooking - onion, sweet bell pepper, celery and sometimes wit da Pope (garlic) - is the building block of many Deep South recipes.
How to Make The Trinity of Cooking


My trinity is very often 1 cup (sometimes more) chopped onion, 1/2 cup chopped sweet green bell pepper or sometimes red, even yellow or orange, or a combination of two or more and 1/4 cup of chopped celery, because that's the ratio I tend to like the most.
It's simply a combination of aromatic vegetables that are widely used as seasoning vegetables across the south.