Shreveport sits on the Red River in Caddo Parish, up at the top corner of the state, closer to Texas than to the Gulf. The food does not care about that.
Louisiana cooking came up the river and up the road with the people who cook it, and a crawfish that was in a pond this morning can be on a table here tonight. What changes this far north is not the recipe. It is the paying attention.
Nobody around here walks in with a sack out of their own back yard. Everything has to be chased down, checked when it arrives, and cooked the same week. When what comes in is not right, we would rather tell you it is not right than boil it and hope.
A boil is a whole afternoon. We would rather you spent it on good crawfish.
That is the entire argument for calling first. Ask what came in, ask what the pound is running, ask whether Saturday is already spoken for. You will get a straight answer and you will not waste a drive.