Interesting note from community team today regarding food that reduces break rate (macaron) -- apparently it goes beyond the cap of how far you can reduce break rate with skill alone:
"By maxing out the bonus effects using food items, it is possible to increase the probability of synthesis success further than it can be increased with skill alone. They can be used in combination to max out the success rates."
This is my translation of a JP community team post on the dev tracker, here's the full post translation:
http://www.bluegartr.com/threads/103...=1#post5381546