Below is a list of mats that we need to collect for raiding for feasts and cauldrons. Please start collecting these items either from your natural game progression or farming and depositing into the "Raid Supplies" tab in the guild bank.
Small Feasts - We can use these for normal
Briny Flesh
Thick Paleo Steak
Sand Shifter
Tiragarde Perch
Midnight Salmon - (this has an incredibly low drop rate - 3-4%)
Big Feasts-Will want to be using these for heroic
Redtail Loach
Frenzied Fangtooth
Stringy Loins
Meaty Haunch
From Cooking (or you can deposit raw fish or Aromatic Fish Oil)
Kul Tiramisu
Mondazi
Cauldrons - These may not be available for first raids so be prepared with your own flasks just in case.
Herbs to donate:
Anchor Weed
Winter's Kiss
Riverbud
Akunda's Bite
Sea Stalk
Siren's Pollen
Star Moss
Wanted to give you all an update on here, as Dys updated the guild MoTD: Due to how expensive feasts and cauldrons are in BfA, we will probably not have them for the first couple of raids. Each raider needs to come prepared with their own flasks, pots, and food. Feasts are slightly better right now due Blizz lowering the amount of Midnight Salmon required (just requires 1 now for the lower feasts) but those salmon are still in short supply.
As for cauldrons, they are extremely, extremely expensive right now, and are not worth making until the 3star recipe is obtained (drops from raid bosses). Each cauldron will require at least 60 Anchor Weeds, 5 expulsions, and 1 hydrocore. Unlike Legion, I will most likely need all the help I can get with mats to be able to provide cauldrons.
That being said, I would love to start making flasks for guildies. Each flask has a chance to proc additional flasks (for free!) and they are the only way to level up alchemy to 140 so I can start getting the recipe for cauldrons.