Know I am late to the party here, but with master 15 cooking was unable to get any successful runs on any less than 5 meat (was about 50/500 fail) with 6 failed 1 in 10 (20 runs, 2 fails) and was also unable to get any successful runs on less than 5 veggies (used pumpkins which should be 'worth' 2
Best was able to do with listing above*(using fox or wolf or sheep meat) was 1/7/6/3 (IE exactly what is listed above even not account for 'ingredient weight')each)d