Detail
Warcraft Tavern's Legacy guide states Master Chef has 5 ranks totaling a 30% chance for cooking recipes to produce an extra result at max rank. Icy Veins' Legacy System guide states Rank 1 alone already grants a 10% chance. If per-rank scaling is linear (10% x rank), 3 ranks would reach 30%, not 5 - the rank counts do not reconcile between the two sources.