According to ingame information. Cooking lists Fire Magic at level 50. -> my toon has level 30 cooking and didn't receive a bonus.
06:50
Created page with "Sulafa in Statehelm, in the vendor area unlocks Transmutation 81-90 Cost: 672,000 Alternate Cost: 336 SR Transmutation 91-100 Cost: 1008,000 Alternate Cost: 504 SR"
15:27