Powder crawfish seasoning/boil - oil vs water based?

Had some pretty tasty crawfish here in Kingwood this afternoon and was asking about what the chef did, and he said he used 2 powders. One was oil based and the other was water-based. He said he used the water-based powder seasoning to cook with in the water, and used the oil-based powder to cover the bugs and let them absorb the spices for 20 minutes in a cooler.

Never heard of different powders between oil based and water based. WTH is this?


.....I know it is taboo to put powder on after-the-fact, just wanted to see if anybody had heard of this oil versus water powder bullshite.