It have a lot of issues right now. Baked and smoked goods don't get "well prepared" buff after they leave the oven/smoke shed, some foods and food ingridients (most noticeble sausages and butter) dont get cooking speed bonus from first part of the credo, altrough being the most time-consuming. +15 const isn't very useful for cook since it have no influence on cooking whatsoever altrough extra con is always welcomed, but cook is probably not a combat character either. +30 cooking is good, but not that big as stat bonuses on forager for example since you make this credo on a rather advanced character and even +30 to skill dosn't feel like a huge boost at this point.
2 of 5 credo bonuses are good but incredible inconsistent and another 2 is underwhelmingly plain and not so useful. Whole credo have only 1 really good bonus at lvl5 and i think its not alright.