Chunk o' Mammoth

Source
This item drops from the following mammoths:
 * 68-70 Mammoth Calf, Wooly Mammoth (mob), Scourged Mammoth and Wooly Mammoth Bull, Borean Tundra
 * 70-73 Emaciated Mammoth Calf, Emaciated Mammoth, and Emaciated Mammoth Bull, Dragonblight (low drop rate)
 * 76-77 Shattertusk Calf, Shattertusk Bull, Shattertusk Mammoth, Sholazar Basin (mammoth has best drop rate)
 * 77-78 Storm Peaks
 * 79-81 The Oculus

Cooking

 * Mammoth Meal
 * Last Week's Mammoth
 * Great Feast
 * Mega Mammoth Meal
 * Spiced Mammoth Treats
 * Gigantic Feast