for some days now i have been buying the following cooking mats from vendor and sold them on AH and have been the only one selling them on AH all the time:
Pandaren Peach - Item - World of Warcraft cost 1g 50s i'm selling them for 7g each
Yak Milk - Item - World of Warcraft cost 1g 60s i'm selling them for 8g each
Silkworm Pupa - Item - World of Warcraft cost 1g 70s i'm selling them for 8g each
Red Beans - Item - World of Warcraft cost 2g 70s i'm selling them for 10g each
they can be bought from following vendors:
Sungshin Ironpaw - NPC - World of Warcraft standing in Tillers in valley of the four winds
Barleyflower - NPC - World of Warcraft stand in shrine of the two moons
Stephen Wong - NPC - World of Warcraft stands in shrine of the two moons
Jojo - NPC - World of Warcraft stands in shrine of seven stars