These new stews are amazing.. full rune now possible at 94 smithing :) I made about 30 stews all with max number of spices +5 runecraft +5 prayer, it does not go down btw :) and +5 crafting.. I'm pretty sure it can boost all stats these are just a few pictures that I've token. Note: these are all random, I used the same amount of spices each time.. 3 red, 3 yellow, 3 brown, and 3 orange. Just have a little patience and you'll get the effect you desire if you did not get what stat you want up right away.